How long is one day on Planet Earth?
24 hours
How long does the Earth orbit around the Sun?
365 days
The Moon orbits the Earth. How many days to orbit once?
28 days
Why do we have night and day?
Earth spins on its axis. It is daytime when your side of the world faces the sun. It is night-time when your side of the world faces away from the sun.
How many planets are closest to the Sun? Name them.
4. Mercury, Venus, Earth and Mars
How many planets are there in our solar system?
8
What is the coldest planet in our solar system?
Uranus
Which planet is called the red planet?
Mars
What is the smallest planet in our solar system?
Mercury
What is light?
Light is a type of energy.
How does light travel?
Light travels in straight lines
How are shadows made?
To make a shadow, an object (something) must block light.
Is the Moon a light source?
No, it isn't.
Some animals are bioluminescent. What does "bioluminescent" mean?
It means that they glow in the dark.
How can we see objects?
The light comes from the light sources, hits the object, reflects off the object, and goes into our eyes.
Name three light sources
Sun, torch, iPhone...
