Unit 6 Test Retake

Front

What is gravity?

Back

Gravity is a force that attracts two bodies towards each other, keeping planets in orbit around stars.

Front

What is the most abundant gas in Earth's atmosphere?

Back

Nitrogen, which makes up about 78% of the atmosphere.

Front

What are inner planets?

Back

Inner planets are those that are closer to the Sun, including Mercury, Venus, Earth, and Mars.

Front

What is a comet?

Back

A comet is a small celestial body made of ice, dust, and rocky material that, when close to the Sun, displays a visible atmosphere and sometimes a tail.

Front

What is the role of the Sun in the solar system?

Back

The Sun is a star that provides light and heat, and its gravitational pull keeps the planets in orbit.

Front

What is inertia?

Back

Inertia is the tendency of an object to resist changes in its state of motion.

Front

What is the difference between inner and outer planets?

Back

Inner planets are rocky and closer to the Sun, while outer planets are gas giants and farther from the Sun.

Front

What is the composition of the Earth's atmosphere?

Back

The Earth's atmosphere is primarily composed of nitrogen (78%), oxygen (21%), and trace amounts of other gases.

Front

What keeps planets in orbit around the Sun?

Back

Gravity is the force that keeps planets in orbit around the Sun.

Front

What is a natural satellite?

Back

A natural satellite is a celestial body that orbits a planet, such as the Moon orbiting Earth.