IMO Practice Test — Earth, Sun & Moon
6 Questions • 12 min • Olympiad level
12:00
Question 1 of 6
medium
The Sun seems to 'rise' in the east and 'set' in the west because the Earth…
Shrinks
Moves the Sun
Grows
Spins from west to east
Explanation: Earth's west-to-east spin makes the Sun appear to move.
Question 2 of 6
hard
Almost all energy on Earth, even in our food, first came from the…
Wind
Moon
Rocks
Sun
Explanation: The Sun is the source of nearly all our energy.
Question 3 of 6
hard
The biggest planet in our Solar System is…
Earth
Jupiter
Mars
Mercury
Explanation: Jupiter is the largest planet.
Question 4 of 6
hard
Astronauts on the Moon left footprints that stay for years because the Moon has no…
Craters
Rocks
Gravity
Wind or rain to wipe them
Explanation: With no wind or rain, Moon footprints last very long.
Question 5 of 6
hard
The Moon changes shape over a month because we see different amounts of its…
Colour
Own light
Sunlit side
Size
Explanation: Phases come from how much of the Sunlit Moon we can see.
Question 6 of 6
hard
Why can't we live on a planet with no water or air, like the Moon?
Living things need water and air to survive
It is too bright
It is too small
It has no rocks
Explanation: Life needs water and air, which the Moon lacks.