Grade 9 · Science · Unit 1 of 13
Our Solar System
Planets, the Moon, seasons and eclipses.
What your child practises
Practises the solar system, Earth's motions, seasons, Moon phases and eclipses. It follows the Grade 9 science skill descriptors on the solar system in the New Brunswick curriculum.
New Brunswick Curriculum skill descriptor: Scientific Literacy: Sensemaking · explanations about the solar system based on evidence from inquiry
Sample questions
A taste of this unit. In the app, questions change every time and get easier or harder to match your child.
Question 1
What is at the centre of our solar system?
- Jupiter
- Earth
- the Sun
- the Moon
the Sun
Hint: The Sun is a star.
Question 2
What causes the Moon’s phases?
- Earth's shadow on the Moon each night
- the Moon changes size
- clouds cover it
- we see different amounts of its sunlit half as it orbits Earth
we see different amounts of its sunlit half as it orbits Earth
Hint: The Moon always has a lit half.
Question 3
What are Jupiter and Saturn mostly made of?
- water only
- rock and metal
- hydrogen and helium
- sand
hydrogen and helium
Hint: They are gas giants.
Question 4
What causes day and night?
- Earth orbiting the Sun
- Earth rotating on its axis
- the Moon blocking the Sun
- clouds
Earth rotating on its axis
Hint: One rotation takes about 24 hours.
Question 5
What is a lunar eclipse?
- the Sun goes out
- the Moon passes between Earth and the Sun
- Earth passes between the Sun and the Moon
- the Moon explodes
Earth passes between the Sun and the Moon
Hint: The Moon moves into Earth's shadow.
Question 6
What is the Sun’s energy source?
- nuclear fusion
- electricity
- burning coal
- chemical batteries
nuclear fusion
Hint: Hydrogen fuses into helium.