Observing Our Sky Vocabulary Test

Front

What is the imaginary line around which a sphere rotates?

Back

Axis

Front

What is the star at the center of the solar system that supplies heat and light to Earth?

Back

Sun

Front

What is the path an object takes as it revolves around another object in space?

Back

Orbit

Front

What do we call making a complete spin on an axis?

Back

Rotation

Front

What are the large celestial bodies that revolve around the Sun in the solar system?

Back

Planets

Front

What is the force that attracts objects toward each other, such as the Earth and the Moon?

Back

Gravity

Front

What is the term for the movement of the Earth around the Sun?

Back

Revolution

Front

What do we call the natural satellite that orbits the Earth?

Back

Moon

Front

What is the term for the area of space where celestial bodies exist?

Back

Universe

Front

What is the name of the closest planet to the Sun?

Back

Mercury