Understanding Tides

What primarily causes the tides on Earth?

• The gravitational pull of the moon

• The Earth's rotation

• The wind patterns

• The temperature of the ocean

How does the moon's gravitational pull affect the ocean?

• It makes the water evaporate

• It has no effect on the ocean

• It creates high tides on the side facing the moon and the opposite side

• It causes the water to freeze

How long does it take to complete one full tidal cycle?

• 6 hours

• 48 hours

• 12 hours and 25 minutes

• 24 hours

What is the term for the average difference in water level between high and low tides?

• Velocity

• Wavelength

• Frequency

• Amplitude

When do spring tides occur?

• During the first and last quarter of the moon

• When the Earth, moon, and sun are aligned

• When the moon is at its highest point in the sky

• When the Earth is closest to the sun

What is the term for tides that occur when the sun and moon are at right angles to each other?

• Neap tides

• Perigee tides

• Spring tides

• Apogee tides

How often do spring tides occur?

• Once a month

• Twice a month

• Every week

• Every day

What happens to tidal ranges when the moon is at perigee?

• Tidal ranges increase

• Tidal ranges become unpredictable

• Tidal ranges remain the same

• Tidal ranges decrease

What is the effect of the Earth's perihelion on tidal ranges?

• Tidal ranges become erratic

• Tidal ranges remain constant

• Tidal ranges increase

• Tidal ranges decrease

What is the effect of the moon's apogee on tidal ranges?

• Tidal ranges increase

• Tidal ranges decrease

• Tidal ranges become unpredictable

• Tidal ranges remain the same