Front

Almost all of the natural light on Earth’s surface comes from the _________.

Back

sun

Front

The Sun is mostly composed of hydrogen and ____________ .

Back

helium

Front

What does the Sun provide to Earth?

Back

Thermal energy

Front

The Earth ___________ the sun.

Back

orbits or revolves around

Front

All of the following are descriptions of the Sun EXCEPT: Much smaller than Earth.

Back

Much smaller than Earth

Front

What is the Sun?

Back

A star made of gases that provides light and heat to Earth.

Front

What is the main source of energy for the water cycle?

Back

The Sun.

Front

What do we call the path that the Earth takes around the Sun?

Back

Orbit.

Front

What is the process called when the Earth spins on its axis?

Back

Rotation.

Front

What are the two main gases that make up the Sun?

Back

Hydrogen and helium.