Understanding Tides and Gravity

What helps us understand tides?

• The sun

• The wind

• Gravity

• The ocean

What happens to gravity when things are far apart?

• It gets stronger

• It stays the same

• It gets weaker

• It disappears

What is the special name for the force that changes gravity over distance?

• Push force

• Pull force

• Tidal force

• Wind force

What does tidal force do to an object?

• Makes it spin

• Makes it shrink

• Makes it stretch

• Makes it float

How many high tides and low tides happen each day?

• One high tide and one low tide

• Two high tides and two low tides

• Three high tides and three low tides

• Four high tides and four low tides

What happens to the Moon each year?

• It gets closer to Earth.

• It stays in the same place.

• It moves a little bit away from Earth.

• It gets bigger.

What does the Moon's pull do to Earth's day?

• It makes the day shorter.

• It makes the day longer.

• It makes the day colder.

• It makes the day brighter.

Why do we always see the same side of the Moon?

• The Moon does not spin.

• The Moon spins very fast.

• The Moon is "tidal locked" to Earth.

• The Earth pulls the Moon to show different sides.

When do we get extra high and extra low tides?

• When the Moon is far from the Earth.

• When the Sun, Moon, and Earth are in a straight line.

• When the Moon is a crescent.

• When the Earth spins very fast.

What kind of tides happen when the Moon is at a right angle to the Sun and Earth?

• Spring tides.

• Super tides.

• Neap tides.

• No tides.