Tide Crash Course

How does the force of gravity change with distance from the center of an object?

• It increases with distance.

• It decreases with distance.

• It remains constant regardless of distance.

• It only changes if the object's mass changes.

What is the primary effect of tidal force on an object?

• It causes the object to spin faster.

• It makes the object heavier.

• It stretches the object.

• It pulls the object closer to the source of gravity.

Why does Earth experience two high tides and two low tides each day?

• Due to the Earth's rotation and the Moon's gravitational pull creating bulges on opposite sides.

• Because of the Sun's gravitational pull on the oceans.

• The Earth's magnetic field interacts with the Moon's magnetic field.

• Changes in atmospheric pressure cause the sea level to fluctuate.

What causes the Moon to gradually move away from Earth?

• The Moon's gravitational pull on Earth is weakening.

• The Earth's rotation sweeps its tidal bulges forward, pulling the Moon ahead in its orbit.

• The Sun's strong gravitational force is pushing the Moon away from Earth.

• The Moon is slowly expanding in size, increasing its orbital radius.

What phenomenon explains why the Moon always presents the same face to Earth?

• The Moon has no axial rotation.

• The Moon's orbital period is shorter than its rotational period.

• The Moon's rotation has been tidally locked by Earth's gravity.

• The Earth's magnetic field prevents the Moon from rotating freely.