Understanding Rotational Concepts

What does the word "rotate" mean?

• To move in a straight line

• To spin around an axis

• To stay still

• To jump up and down

What is an "axis"?

• A type of animal

• A line around which something rotates

• A kind of plant

• A type of food

What does "revolve" mean?

• To stay in one place

• To move in a circular path around something

• To fall down

• To jump up

What is an "orbit"?

• A straight path

• A circular path around a planet or star

• A type of vehicle

• A kind of dance

What is a "crater"?

• A type of tree

• A bowl-shaped hole on the surface of a planet or moon

• A kind of fruit

• A type of building

What causes day and night on Earth?

• The Sun moving around the Earth

• The Earth rotating on its axis

• The Moon moving around the Earth

• The Earth moving around the Sun

How long does it take for the Earth to complete one rotation?

• 12 hours

• 24 hours

• 48 hours

• 36 hours

What did people long ago believe about the Sun and Earth?

• The Sun stood still and the Earth moved around it

• The Earth stood still and the Sun moved around it

• Both the Sun and Earth stood still

• The Earth moved around the Moon

What is the imaginary line called that is drawn from the North Pole to the South Pole?

• Equator

• Axis

• Meridian

• Latitude

At what angle is Earth's axis tilted?

• 15.5°

• 23.5°

• 30.5°

• 45.5°