SPACE
100
Which planet is closest to the Sun?
MERCURY
200
Why does the Moon shine at night even though it does not produce its own light?
Because it reflects sunlight from the Sun.
300
Why can’t humans breathe normally in space without a spacesuit?
Because there is no oxygen and no air pressure in space, so a spacesuit is needed to provide air and protection.
400
How would an astronaut’s weight change on the Moon compared to Earth?
Their weight would be about one-sixth of their weight on Earth.
500
hat is one scientific reason that explains why the universe is still expanding today?
The universe is expanding due to dark energy, which pushes galaxies farther apart.