What's covered
Space and the solar system8
Sample questions
A taste of the 8 questions in this topic — answers marked. Sign up to practise the full set with spaced repetition.
1Space and the solar system
Which is the closest planet to the Sun?
- •Earth
- •Mars
- ✓Mercury
- •Venus
2Space and the solar system
Which planet is known as the red planet?
- •Jupiter
- ✓Mars
- •Mercury
- •Venus
3Space and the solar system
What causes day and night on Earth?
- •Earth orbits the Sun once daily
- ✓Earth spins on its axis once per day
- •The Moon blocks the Sun for half a day
- •The Sun moves around Earth
4Space and the solar system
What causes the seasons?
- •Earth gets closer to or further from Sun
- ✓Earth's tilt as it orbits the Sun
- •The Moon blocks the Sun in summer
- •The Sun changes brightness during the year
5Space and the solar system
Roughly how long does Earth take to orbit the Sun?
- •a single day (24 hours)
- •about ten years
- •one month (about 28 days)
- ✓one year (365.25 days)
6Space and the solar system
What is a galaxy?
- •A planet with rings around it
- •A single bright star
- •A small group of asteroids
- ✓Huge group of stars held by gravity
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