Do surfaces reflect 100% of the light that hits them?
Some of them, like mirrors
Yes, they do.
No, they don't. Everything absorbs a bit of it.
Which statement is true?
Energy can't come from nowhere. It just changes its form
We can create energy
Some energies can be created. Some other can't
How long would it take for us to notice that the Sun turned off?
It depends if I'm sleeping or not
8 hours
8 minutes and 20 second
We would notice immediately
What is the speed of light?
300,000 KM PER HOUR
very fast
300,000 KM PER MINUTE
300,000 KM PER SECOND
How can we see things?
We have eyes. They take care of it
Light makes things apper
Light rays bounce off things and into our eyes
When you turn off the light, it completely disappears. True or false?
False. The energy stays in the room, but it moves too fast to see it.
This butterfly is yellow. Or, at least, we see it yellow. How does that happen?
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Can we see all types of light? Can you give me some examples?
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How do rainbows happen?
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Where do the stars go in the daytime?
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