Science Review

When playing tug of war and neither sides move, forces are....

• balanced

• unbalanced

• multiplied

• unequal

When floating a ping-pong ball with a hairdryer, which two forces are balanced?

• Gravity and the moon

• gravity and the earth

• gravity and the air

• there are no balanced forces

How long does it take the Earth to rotate on its axis?

• 23 hours

• 24 hours

• 48 hours

• 365 days

How long does it take for Earth to orbit the Sun?

• 365 days

• 439 days

• 24 hours

• 365.25 days

What does earth's rotation give us?

• Day and night

• Seasons

What does earth's revolution give us?

• day and night

• seasons

True or false: Earth's orbit around the sun is what causes night and day.

• true

• false

True or false: All constellations are visible from the Earth each night.

• true

• false

A sundial uses patterns of what to tell time?

• sunn days

• shadows

• chicken nuggets

• stars

What are stars made up of?

• burning gas

• potatoes

• liquid metal

• molten rock