Study Guide for Science Test #2

Front

What is gravity?

Back

Gravity is the force that attracts two bodies towards each other, keeping objects like the Moon in orbit around the Earth.

Front

How does distance affect gravitational force?

Back

The gravitational force decreases as the distance between two objects increases.

Front

What are gas giant planets?

Back

Gas giant planets are large planets that are primarily composed of hydrogen and helium, with thick atmospheres and no solid surfaces.

Front

What are inner planets?

Back

Inner planets are the four planets closest to the Sun (Mercury, Venus, Earth, Mars) that have rocky surfaces.

Front

Why does Mercury have extreme temperature changes?

Back

Mercury has extreme temperature changes because it has no significant atmosphere to retain heat.

Front

What is the largest planet in our solar system?

Back

Jupiter is the largest planet in our solar system.

Front

What is the main difference between inner and outer planets?

Back

Inner planets have rocky surfaces, while outer planets have gaseous surfaces.

Front

What is the role of the Sun's gravity in the solar system?

Back

The Sun's gravity keeps the planets in orbit around it.

Front

What is a bar graph?

Back

A bar graph is a visual representation of data using bars to compare different categories.

Front

What is the atmosphere?

Back

The atmosphere is a layer of gases surrounding a planet that can affect temperature and weather.