Have a question? My team and I are happy to hear your questions and get you answers! When you type a question, it shows up not only on that experiment but also here so you can easily find your answer. You'll find question boxes at the bottom of every experiment in the program.

Answer:  Can Electricity Be Made From Sunlight?

If you are referring to the audio plug, then look at the black rings/bands going around it. If it has two black bands around it, then it's got three sections. The base is ground, the tip is one earphone and the middle is the other.

Answer:  Magnetic Tornadoes

Yes that is true - this is supposing we overcame those obstacles or were viewing it from a safe distance!

Answer:  Quantum Mechanics: Double Slit Experiment

It's true in physics not just black holes for when one person or object is accelerating and the other is not. A "non-inertial reference frame" is a frame of reference (a point of view) that is accelerating (gaining or losing speed) with respect to an inertial frame. The laws of motion are the same in all inertial frames (constant speed or non-moving), in non-inertial frames (accelerating), they vary from frame to frame depending on the acceleration.

Answer:  Can Insulation Save Energy?

Usually, you should see a download under the video - find the questions on the last page. This particular experiment didn't have a video because it was such an easy experiment to do, so questions you might ask would be: 1. How does cup thickness change the results? 2. Does it matter what kind of ice I use? 3. How does outside air temperature affect the results? And now you can answer your own questions by doing experiments that solve those!

Question: from youngsurrender about the Magnetic Tornadoes experiment :

Me and my siblings put our Lego people in the bottle and watched them swirl around. It was like seeing what would happen if you were inside of a tornado. Not something I'd want to experience. Especially on Mercury. But what would happen if you were in a magnetic tornado on Mercury, if you didn't get fried or frozen before you got the chance to see what would happen?

Question: from youngsurrender about the Quantum Mechanics: Double Slit Experiment experiment :

Hi Mrs Aurora! That video was really interesting! I have a question though. You mentioned in one of your teleclass's about black holes that there is more than one point of view. Is that also true when it come to observing light waves and light particles? If I was as small as a light wave or particle and tried to observe them, at different levels or angles, would it stil interfere with them? Or do they just somehow have eyes to see if we're looking or not?

Question: from shanesdeals about the Can Electricity Be Made From Sunlight? experiment :

whats the middle part do on headphones.

Question: from shanesdeals about the Can Insulation Save Energy? experiment :

wheres the questions

Question: from youngsurrender about the Special Science Teleclass: Chemistry & Chemical Engineering experiment :

I think sharing what you learned is the funnest part! Answering others questions helps me to learn more, while helping others learn more. Thank you so much Mrs. Aurora!

Answer:  Forever Falling

The advanced Lab is now part of the HS Physics section that you can access through here: https://www.sciencelearningspace2.com/grade-levels/high-school/advanced-physics/ The lab you are referring to is covered in the first section and includes step by step video instructions.

Answer:  Vector Diagrams

I sent you a private message.

Question: from michelle_gillespie about the Forever Falling experiment :

What are we supposed to put in the worksheet chart? There are no clear instructions.

Question: from jennifermodlin about the Vector Diagrams experiment :

And how could i send my work to you?

Question: from jennifermodlin about the Vector Diagrams experiment :

Sorry Mrs. Aurora, I just found a work sheet you sent to a student in one of the comments to help me with the pop rocket equation. Is there a way that I could send in the pop rocket work to you? I just want to make sure I'm doing them right.

Answer:  P-Shooters

No, you do need a way to slit the eraser, so just be careful!

Question: from evgeniya_bogue about the P-Shooters experiment :

do i have to youse a razer

Answer:  Lava Lamp

Yes absolutely!

Answer:  Acceleration

yes the negative number needs to mean something. On a scalar, it doesn't mean anything, but on a vector it will indicate direction.

Question: from minnesotamelissa about the Acceleration experiment :

So, can only vector equations have negative numbers?

Question: from ribka80 about the Lava Lamp experiment :

Can we use corn oil for this?

Answer:  Rock Candy Crystals

It depends on what you use in your solution and the temperature it remains at. Borax (sodium tetraborate) takes only a few hours, but salt will take a month unless you add heat, then it's only hours. Sugar is days to weeks, unless you heat it, then it's faster. Also, if you don't have a super-saturated solution, you'll be waiting forever and no crystals will form. The solution has to be just right for crystals to start to form.

Answer:  Eclipses and Transits

Yes transits happen a lot, but not as often as eclipses. Mercury transits once every 7 years, Venus does it in pairs 8 years apart, like this: 1874 & 1882, 2004 & 2012, 2117 & 2125...

Question: from youngsurrender about the Eclipses and Transits experiment :

That is amazing! Will any planets in front of us transit the surface of the earth?

Question: from misty_slayton about the Rock Candy Crystals experiment :

how long does it take for it to be come a crystal

Answer:  Vector Diagrams

Yes, which equations specifically are you looking for? Projectile motion? F-ma?

Answer:  Turning Copper Into Gold

No, it's brass, which is gold colored. We fuse two metals together to make the appearance of gold (for a fraction of the cost!) It's a chemistry experiment.

Question: from jennifermodlin about the Vector Diagrams experiment :

Do you have a video on how to work out the equations?

Question: from delois about the Instant Ice experiment :

U Called the salt water.: )

Question: from hunybear81 about the Turning Copper Into Gold experiment :

So, was this turned into actual gold?

Question: from delois about the Plasma Grape experiment :

it Did not work for me that is spliting and blowing up. I set it for 12 seconds.What do U Suggest.

Question: from hunybear81 about the Periodic Table experiment :

That was a wonderful lesson, thank you!:)

Question: from delois about the Rubber Eggs experiment :

Hello?

Answer:  Using Newton's Laws Together

Yes, great question. The FBD of the bolt will have the "mg" pointed down (weight of the bolt) and a normal force pointed up (force from ocean). There is no "a" in the "ma" part of F = ma since it is in freefall and is no longer accelerating.

Answer:  Laundry Soap Crystals

I am not sure of your question - please ask again? What specifically did you need help with?

Answer:  Rock Candy Crystals

Rock Candy Did I forget to show it? This is what it looked like.

Answer:  Rubber Eggs

No, the calcium will get dissolved by the vinegar, but it won't pop - there's no air pressure on the inside!

Question: from misty_slayton about the Laundry Soap Crystals experiment :

borax is used to make slime but i didnt know it can be used for a lot of things if i do make one with borax do i have to have my mom help me make it??

Question: from misty_slayton about the Rock Candy Crystals experiment :

in your rook candy video why did you not sow what it lookd like???

Question: from juliehrrs2 about the Using Newton's Laws Together experiment :

In problem 6 of the "Newton's Laws" worksheet, the problem asks to find the force exerted upon a .22 kg bolt by ocean water as it falls at a terminal velocity of 43 m/s. My force pair would be the ocean interacting with the bolt. What would my free body diagram be for each of the two forces? Is there a certain part of this video that would help solve this problem?

Question: from delois about the Rubber Eggs experiment :

Hi.I was wondering will the Egg pop?

Question: from oonaiza14 about the Hot Air Balloon experiment :

I live in a tropical country:)!

Question: from delois about the Rubber Eggs experiment :

Will the egg pop?

Question: from okambon about the Special Science Teleclass: Chemistry experiment :

Is there anything else that can be used besides the EZ hand warmers? I cant find them anywhere where we live. I have been everywhere. Can we use anything else?

Answer:  What’s Your Lung Capacity?

A "siphon" (A cipher is a secret code, like when you send a secret message!) refers to how water flows uphill against gravity without having a pump involved. If you look carefully at the entrance and exit points for the water in the tube, the exit needs to be lower than the entrance for this to work. The idea that "water seeks its own level" means than water will flow until all of it is at the same level potential-energy-wise. The higher water is, the more gravitational potential energy it will have (the "could" energy), and it will accelerate in the direction to reduce the potential energy as soon as it can. Water has more than one kind of potential energy - it also has energy due to pressure. Higher pressure water has more energy than lower pressure water (think of the water coming out of a firehose vs a garden hose). Water tens to accelerate from high pressure to low, from high potential energy to power, even without gravity involved. If you place water in a vertical column (tube) and look near the top, it will have less potential energy due to pressure than the water near the bottom of the tube due to the weight of the water. In a siphon, when the tube goes up first from the higher container and then down to a lower container, the water weight in the downward part of the tube decreases the pressure inside the first part of the tube (where the water is rising). Total potential energy is decreasing the whole time, even when the water is rising, because the pressure potential energy drops quickly to make up for the rise in gravitational energy when it travels downward toward the bottom container.

Question: from wjhofmans about the What’s Your Lung Capacity? experiment :

We did this experiment! After blowing the water out of the bottle, our mom showed us how to cipher water back into the bottle. Instead of blowing it out we made the hose put the water back in. Question about ciphering: what keeps the water coming out of the hose after the initial suck to get it coming? What is happening in ciphering?

Answer:  Constant Acceleration

The answers are on the last page if it is a single worksheet download. If it is the BIG download from the high school section, they are listed as the last link in each lesson section.

Answer:  June 12th: Flight Lesson with a REAL Pilot!

I am not familiar with your location, however there are directories of flight schools online that may be able to help: https://www.aopa.org/learntofly/school/index.cfm

Answer:  Chemistry Fundamentals

The rest are covered in subsequent videos - it was such a long video that I broke it into separate videos so it would be easier to work through them.

Answer:  Measuring the Speed of Light with a Chocolate Bar

It needs to be able to melt easily - I think smarties are too hard, if I recall right?

Question: from bygracehomeschool about the Measuring the Speed of Light with a Chocolate Bar experiment :

um can small sweets such as smarties work or not

Question: from ninatz about the June 12th: Flight Lesson with a REAL Pilot! experiment :

is there a flight school close to hsinchu that takes 10 year olds

Question: from sherryruss about the Chemistry Fundamentals experiment :

We've watched the video and filled in the worksheet, however, the video only covers up to 12 but there are 83 on the worksheet. Where do we find the information for the rest of the worksheet questions?

Question: from evgeniya_bogue about the Whackapow! experiment :

what happens if you let go of a helium ball and a water balloon?

Question: from babyaidenshy about the Constant Acceleration experiment :

Were do we find the answers to the homework questions? I see someone else had trouble finding them, but I do not know where they have been uploaded to. Thanks

Answer:  Units for Energy

Work is the energy transferred to or from an object by applying force along a displacement. Since gravity is "up and down", if the force is moving perpendicular to the Earth's gravitational field (gravity does not make objects slide sideways), then there is no work done against the gravitational field. The next lesson is "moving against a force" and that should help explain this idea further. It’s important to know the difference between conservative and non-conservative forces. The work done by a conservative force is path-independent, meaning that the actual path that the object takes makes no difference. Fifty feet up in the air has the same gravitational potential energy whether you get there by climbing a ladder or or by hopping on a helicopter. It is different from the force of friction, which transforms kinetic (moving) energy to heat. When friction is involved, the path you take does matter, because if the path is longer, then more energy is transferred to heat. so friction is a non-conservative force. Air resistance is another non-conservative force. So for the example in the video, the work done against the gravitational force is zero, since we did not move it "up or down" in the same direction as gravity pulls. We did not look at frictional forces yet. Does that help?

Answer:  Precision and Accuracy

Yes it has a video - try hitting refresh, or if that doesn't help, log out and log back in. If you still have trouble, please take a screenshot, send it to my email along with info as to what device/browser you are using so my team can figure out what's going on.

Answer:  Special Science Teleclass: Chemistry & Chemical Engineering

Look under the experiment videos - a lot of the videos will have a link right under the player. You are currently on the main concept videos, not the experiment videos. Try a different video further down on the list.

Question: from Cristinarodriguez198390 about the Special Science Teleclass: Chemistry & Chemical Engineering experiment :

I dont see the the work sheets

Question: from hunybear81 about the Precision and Accuracy experiment :

Hey Aurora, this lesson doesn't contain a video...

Question: from hunybear81 about the Measuring Chemicals and Converting Units experiment :

Yes, I did refresh the page several times...It still doesn't contain a video.

Question: from ksoh about the Units for Energy experiment :

Could you please clarify how the rock moves if total work is equal to zero?

Question: from kawt74 about the Disappearing Beaker experiment :

Awesome!!!!!!!

Answer:  Water Cycle Column: Is Rain Pure?

I have sent you a private email in response. Thank you!

Answer:  Measuring Chemicals and Converting Units

You should have a video - try refreshing the page. Do you see it yet?

Question: from hunybear81 about the Converting Units experiment :

That was a super informative lesson! I now know how to find out how many seconds are in a year!!:)

Question: from hunybear81 about the Measuring Chemicals and Converting Units experiment :

Hey Aurora, there isn't a video on this lesson...is this a glitch?

Question: from hunybear81 about the Scientific Method experiment :

I love learning about the scientific method, and you've made it easier!!:)

Question: from jtdutton about the Water Cycle Column: Is Rain Pure? experiment :

Hi! We're new to this program and I have a question...Do you provide teaching lessons associated with the labs? I can execute the directions but, unfortunately, I'm struggling to explain how and why the water is effected by changing the variables. For example, is there a lesson regarding capillary action? I love the labs, however, I'd love more guidance explaining the science behind them. Thanks so much, Liz

Question: from oonaiza14 about the Water Purification experiment :

Thanks! Working now.

Answer:  Water Purification

Sorry for the trouble! Is it just this video that is glitchy or are they all like that? I have uploaded it again with a new player this time, so it should run smoothly for you if your internet connection is good.

Answer:  Light, Lasers, and Optics

It is both, depending on what the situation is.

Question: from oonaiza14 about the Water Purification experiment :

Same Problem here!

Question: from alena110 about the Light, Lasers, and Optics experiment :

So light is a wave? How come everyone says they don't know if it's a wave or a particle? Or both?

Answer:  Building Speakers

The best way to increase the impedance (resistance) of the speaker is to add more windings of wire. But, as you mentioned, you can increase the resistance by adding a resistor. This part shouldn't be more than a few dollars, or even less than a dollar depending on the resistor value. As a side note, be careful not to move a magnet back and forth across your speaker coil while it is connected to an IC or stereo system. Moving the magnet back and forth will induce an electrical current high enough to fry your IC or parts of your stereo amplifier.

Answer:  Real Jet Engines and Working Space Shuttle Models

To freeze hydrogen, they surround it with liquid helium to reduce its temperature. They then put it in a vacuum chamber to reduce the pressure and to evaporate some of the gas. The temperature of the remaining gas drops to a temperature low enough to free. To freeze oxygen, they surround it with liquid nitrogen to reduce its temperature. They then use the same vacuum process.

Answer:  Simple Microscope & Telescope

A lens works by bending light. This is called refraction. Magnifying glasses affect light in a way that makes an object look larger. But only if the object is a certain distance from the lens. This is called the focal point. If the object is farther away, or if you hold the lens too far from your eye, the light crisscrosses and turns upside down. Try some experiments by holding one and two lenses at different distances and see if you can get the image to appear upright.

Answer:  Quantum Mechanics: Double Slit Experiment

The idea of superposition comes from observations made by scientists and from lots of math performed by theoreticians (people who work on ideas about how things work) While physicists have an understanding that atoms can exist in more than one state at the same time, they still don't have an understanding of how this works.

Answer:  Neptune’s Furnace

The first estimate of Neptune's temperature comes from measuring the energy coming off the planet. This is similar to the infrared camera that they use at doctor's offices to take a person's temperature across the room. Voyager 2 gave us a close look at Neptune back in 1989. However, we hope to send a probe into Neptune's atmosphere someday so we can have really accurate measurements of the planet's temperature. Calcium Chloride is hygroscopic. This means it can attract and absorb water. This compound causes extreme dryness if it comes in contact with skin. In extreme causes, it can cause skin burns.

Answer:  Special Science Teleclass: Black Holes

The answers are printed on the slides as we go through the presentation. The write-in answers are underlined on each slide.

Question: from murf214 about the Special Science Teleclass: Black Holes experiment :

Is there an answer key?

Question: from kjoykonnection about the Zinc Dust experiment :

Our zinc dust turned purple and stayed purple.

Question: from teamdevriesedu about the Microscope Lab Introduction experiment :

OH YEAH

Answer:  Real Jet Engines and Working Space Shuttle Models

Yes you can liquefy oxygen (often this is performed with the air inside of a balloon during a chemical demonstration involving liquid nitrogen.

Question: from imlkn4wrd about the Special Science Teleclass: Black Holes experiment :

I do not see an answer key for this lesson. Am I missing something? Thank you!

Answer:  Special Science Teleclass: Renewable & Alternative Energy

Try refreshing the page. Did that help?

Answer:  Building Speakers

Yes, you can, opt for the thinnest insulation you can find.

Question: from jayana_pya about the Building Speakers experiment :

Can you use regular electric wire instead of magnetic wire?

Question: from ebernard about the Special Science Teleclass: Renewable & Alternative Energy experiment :

It says the video will not load.......

Answer:  Acceleration

Yes the solutions are written out on the last pages of the HW set. Do you see them there?

Question: from laurene_ross about the Acceleration experiment :

We are doing the problems in the homework. We can't figure out how to get the right answers for the acceleration problems. For example, we got 25 and it is supposed to be 20. Can we see this work somewhere? Are there written out solutions for each homework problem? I have no idea how to figure this out as I am not a science person. Thank you:)

Answer:  Real Jet Engines and Working Space Shuttle Models

Why hydrogen? There's many other ways to do this without hydrogen that go even higher. (We do the hydrogen rocket experiment only in our upper level chemistry for high school kids.)

Answer:  Fire & Optics

No, you need to adjust the focal point more carefully. Watch for where the light is concentrated down to a pinpoint.

Answer:  Building Speakers

Try logging out and log back in - did that help?

Question: from bkimes about the Real Jet Engines and Working Space Shuttle Models experiment :

and also how do you think you could make a homemade hydrogen rocket?

Question: from bkimes about the Real Jet Engines and Working Space Shuttle Models experiment :

how do they freeze the hydrogen and oxygen?

Question: from Bekahbennett about the Simple Microscope & Telescope experiment :

"When I tried looking at an image far away, it flipped the image upside down. Why did it do that?" -Ian, age 8

Question: from graciedoula about the Quantum Mechanics: Double Slit Experiment experiment :

also does the observer problem have to do with the amount of energy we use to actually observe?

Question: from graciedoula about the Quantum Mechanics: Double Slit Experiment experiment :

can you explain how an atom superposition works?

Question: from Bekahbennett about the Neptune’s Furnace experiment :

"How do we know how hot Neptune gets?" -Nik, age 10 "Why is Calcium Chloride so dangerous for our skin?" -Ian, age 8

Question: from lojaeger about the Fire & Optics experiment :

We were not able to get anything to burn. Is it subject to a time of day or year?