unit 4 Lesson 1: Earth’s motion around the sun

A set of events that happen over and over again is known as ______________

• cycle
• routine
• pattern
• sequence

 An imaginary line that divides Earth into its northern and southern halves is known as _________________________

• Equator
• International Date Line
• Tropic of Cancer
• Prime Meridian

Why does the sun spins?

• The sun spins due to its magnetic field.
• The sun spins because of its size and weight.
• The sun spins because of the conservation of angular momentum from its formation.
• The sun spins to create solar flares.

A spinning motion is called ____________

• revolution
• spin
• twirl
• rotation

Earth rotates on an imaginary line that runs through its _____________

• axis
• core
• equator
• mantle