Review for Trung Duc

It happens when cold and warm air makes electricity.

• lightning

• Northern lights

• sunset

It happens when the Sun goes down at the end of a day.

They are coloured lights in the night sky. They are caused by activity from the Sun.

• Northern lights

• constellation

• rainbow

It’s a group of stars in the sky. We can see it easily in places where there are no city

lights.

• Northern lights

• constellation

• rainbow

It happens when there is sunshine straight after rain.

• Northern lights

• constellation

• rainbow

the eighth planet in the Solar System and the farthest planet from the Sun

• Neptune

• Uranus

• Saturn

the seventh planet from the Sun and the coldest planet in the Solar System

• Neptune

• Uranus

• Saturn

the second largest planet of the Solar System and has the beautiful rings made of dust

and ice

the fifth planet from the Sun and the largest planet in the Solar System

the planet covering with red-orange dust of its surface

• Mars

• Earth

• Venus