6.9B ! Tides

The diagram models four lunar phases.

During which lunar phase is the tide highest?

Which of the following has the greatest effect on the Earth’s tides?

• The Sun’s gravitational pull

• The gravitational pull of Mars

• The gravitational pull of Venus

• Atmospheric pressure
• The Moon’s gravitational pull

Students used pictures of the Sun, Earth, and Moon to model positions during tides.

Which of the following diagrams best represents a spring tide?

(choose all that are correct)

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Students used pictures of the Sun, Earth, and Moon to model positions during tides.

Which of the following diagrams best represents a neap tide?

(choose all that are correct)

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How often does a coastal area experience a high tide?

• Every 6 hours and 12.5 minutes

• Every 12 hours and 25 minutes

• Every 24 hours and 50 minutes

• Every 48 hours and 100 minutes

When do spring tides occur?

• During a new moon and full moon

• During a first quarter moon and third quarter moon

• When the Moon's gravity pulls on the Earth's ocean water

• When the Moon is at right angles to the Sun and Earth

Tags

NGSS.MS-ESS1-1

When do neap tides occur?

• During a new moon and full moon

• During a first quarter moon and third quarter moon

• When the Moon's gravity pulls on the Earth's ocean water

• When the Moon is at right angles to the Sun and Earth

Tags

NGSS.MS-ESS1-1

What is the difference between high tide and low tide during neap tides?

• The high tide is higher than normal and the low tide is lower than normal

• The high tide is lower than normal and the low tide is higher than normal

• The high tide and low tide are at the same level

• There is no difference between high tide and low tide during neap tides

What is the difference between high tide and low tide during spring tides?

• The high tide is higher than normal and the low tide is lower than normal

• The high tide is lower than normal and the low tide is higher than normal

• The high tide and low tide are at the same level

• There is no difference between high tide and low tide during spring tides