Earth & Space Review

Front

What is gravity?

Back

Gravity is the force that attracts two bodies towards each other, such as the attraction between the Earth and objects on it.

Front

What is a comet?

Back

A comet is a small celestial body made of ice, dust, and rocky material that, when passing close to the sun, develops a glowing coma and a tail.

Front

What are the phases of the moon?

Back

The phases of the moon are the different appearances of the moon as seen from Earth, including new moon, waxing crescent, first quarter, waxing gibbous, full moon, waning gibbous, last quarter, and waning crescent.

Front

What is a galaxy?

Back

A galaxy is a massive system that consists of billions of stars, gas, dust, and dark matter, all held together by gravity.

Front

What is the equator?

Back

The equator is an imaginary line that divides the Earth into the Northern and Southern Hemispheres, experiencing the least variation in daylight hours throughout the year.

Front

What is the difference between a comet and an asteroid?

Back

Comets are icy bodies that develop tails when near the sun, while asteroids are rocky bodies that do not have tails.

Front

What is the solar system?

Back

The solar system is a collection of celestial bodies, including the sun, planets, moons, asteroids, comets, and meteoroids, that are bound by gravity.

Front

What causes the seasons on Earth?

Back

The seasons are caused by the tilt of the Earth's axis and its orbit around the sun, leading to varying angles of sunlight.

Front

What is a meteor?

Back

A meteor is a small particle from space that burns up upon entering the Earth's atmosphere, creating a bright streak of light.

Front

What is the difference between a waxing and waning moon?

Back

A waxing moon is when the visible portion of the moon is increasing, while a waning moon is when the visible portion is decreasing.