HMH Solar System Flashcard 7.9A

Front

What is the definition of an inner planet?

Back

An inner planet is a planet that orbits close to the Sun, primarily composed of rock and metal, and includes Mercury, Venus, Earth, and Mars.

Front

Which planet is known to have life?

Back

Earth is the only known planet that has life.

Front

What is an asteroid?

Back

An asteroid is a small rocky body that orbits the Sun, primarily found in the asteroid belt between Mars and Jupiter.

Front

What are the main characteristics of Venus?

Back

Venus is known for its thick atmosphere, high surface temperatures, and geological features like mountains and volcanoes.

Front

Why is Venus difficult to study?

Back

Venus is difficult to study because its surface is obscured by thick clouds of sulfuric acid.

Front

What is the distance of Neptune from the Sun?

Back

Neptune is the farthest planet from the Sun in our solar system, with a large orbital path.

Front

What causes day and night on Earth?

Back

Day and night are caused by the rotation of the Earth on its axis as it revolves around the Sun.

Front

What is the difference between rotation and revolution?

Back

Rotation is the spinning of a planet on its axis, while revolution is the movement of a planet around the Sun.

Front

How long does it take Neptune to complete one revolution around the Sun?

Back

Neptune takes about 165 Earth years to complete one revolution around the Sun.

Front

What is the significance of the asteroid belt?

Back

The asteroid belt is a region between Mars and Jupiter that contains numerous asteroids, remnants from the early solar system.