7.9A, 7.9B, 7.9C 7th Grade Science Review

Front

What are asteroids made of?

Back

Asteroids are made of rock and metal.

Front

What are comets made of?

Back

Comets are made of ice, dust, and rocky material.

Front

What is the Kuiper Belt?

Back

The Kuiper Belt is a doughnut-shaped region just past Neptune where icy objects have stable orbits.

Front

Why is Earth unique in the solar system?

Back

Earth is unique because it is the only planet with liquid water on its surface.

Front

What role does gravity play in the solar system?

Back

Gravity keeps planets in orbit around the Sun.

Front

Which planet is the sixth from the Sun?

Back

Saturn is the sixth planet from the Sun.

Front

What is the main component of Earth's atmosphere?

Back

The main component of Earth's atmosphere is nitrogen, followed by oxygen.

Front

What is the difference between a comet and an asteroid?

Back

The main difference is that comets are icy and have tails when near the Sun, while asteroids are rocky.

Front

What is the significance of liquid water for life?

Back

Liquid water is essential for life as we know it, providing a medium for biochemical reactions.

Front

What happens to Earth without gravity?

Back

Without gravity, Earth would not be able to orbit the Sun.