You will need to access an area with very bright sunlight. You can attach it near a window and it will show rainbows in your home. The average cost for one is about $40.00
A solar powered heating unit may or may not work on the moon
No.
the same as they do on earth!
Yes, solar power reaches the moon.
They do work inside. While it's true that solar powered calculators have trouble in very dim lighting, they will work with almost any light. If it's a healthy level of light for your eyes, it should be enough light to power a solar calculator.
If you double click on the Rainbow Maker, you will see this machine work.
A solar powered heating unit may or may not work on the moon
Solar powered things work when they reflect off the sun. For example, if you have solar power energy it reflects off the sun making energy and then you can use it.
Depens on how many hours of sun it gets, on how much you want to drive it, and for how long/fast you want it to go. A solar powered speed boat - no. A solar powered commercial ferry - no. A solar powered dinghy for some casual fishing - sure.
the same as they do on earth!
No.
Yes, solar power reaches the moon.
Typically they are powered by electricity (like plugged into the wall). So no, however, that electricity may come from solar power.
no stupid head
They do work inside. While it's true that solar powered calculators have trouble in very dim lighting, they will work with almost any light. If it's a healthy level of light for your eyes, it should be enough light to power a solar calculator.
Solar powere lights usually require a good deal of sunlight to be powered so it may not work if you do not get much light in your yard.
They use power from an internal battery when solar energy is not available.