Intro to tides

What are tides?

• the rise and fall of sea levels

• detergent used for cleaning

• surface waves on large bodies of water

• the movement of water due to wind

What causes tides?

• Gravitational force of the Moon

• Gravitational force of the Sun

• All of the above

• Rotation of the Earth

What is the force of attraction between two objects called?

• Centrifugal force

• Gravitational force

• Magnetic force

• Inertial force

Why does the moon's gravity have a more pronounced effect on the Earth's ocean?

• Because the moon is brighter than the Sun

• Because the moon has more mass than the Sun

• Because the moon is closer to the Earth

• Because the moon is larger than the Sun

What is the force that causes the water to move away from the Earth and form a bulge?

• Magnetic force

• Gravitational force

• Inertial force

• Centripetal force

What is the height difference between high tide and low tide called?

• Tidal range

• Tidal bulge

• Tidal wave

• Tidal force

How many high tides and low tides do most places get each day?

• Four high tides and four low tides

• Three high tides and three low tides

• Two high tides and two low tides

• One high tide and one low tide

What are the tides called when the Sun, Moon, and Earth form a line?

• Winter tides

• Autumn tides

• Summer tides

• Spring tides

When the moon is at first quarter or third quarter, what are the tides called?

• Spring tides

• Low tides

• High tides

• Neap tides