Gravity & Orbital Motion of Universe- Galaxy - Solar System

Front

What is gravity?

Back

Gravity is a force that attracts two bodies towards each other, depending on their masses and the distance between them.

Front

Does the moon exert gravitational pull on the Earth?

Back

True

Front

What happens to gravitational pull as distance increases?

Back

The greater the distance, the less its gravitational pull is on the second object.

Front

What are objects in the Universe outside of Earth's atmosphere called?

Back

Celestial bodies.

Front

What type of galaxy is the Milky Way?

Back

The Milky Way is a spiral galaxy.

Front

What is a galaxy?

Back

A galaxy is a giant structure that contains dust, gases, and hundreds of billions of stars.

Front

What is the solar system?

Back

The solar system is a collection of planets, moons, asteroids, comets, and the Sun, all bound by gravity.

Front

What is orbital motion?

Back

Orbital motion is the movement of an object in an orbit around a point in space, such as a planet around a star.

Front

What is a planet?

Back

A planet is a celestial body that orbits a star, is spherical in shape, and has cleared its orbit of other debris.

Front

What is a star?

Back

A star is a massive, luminous sphere of plasma held together by gravity, undergoing nuclear fusion.