Supporting Standard 8.7 (C)

Which diagram correctly illustrates a neap tide?

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Tides are one of the most predictable forces on Earth because the rely on the positions of the sun, moon and Earth.

Why does the moon have a greater effect on tides that the sun?

• The moon is farther form the sun.

• The moon is closer to Earth.

A student is vacationing at the beach and notices only a small difference between the high and low tides. Based on the student's observations, which moon phase is most likely occurring?

• Full moon

• Waning crescent

• First quarter moon

• Waning gibbous

Based on information in the table, which conclusion best explains the tide data?

• The difference in high and low tides is greater when the sun, moon and Earth form a right angel.

• The difference in high and low tides is greater when the sun, moon and Earth are in alignment.

The graphic below illustrates a principle of ocean tides.

Which explanation is best supported by the illustration?

• Only the moon affects the ocean tides. The sun is too far away to have an effect on tides.

• Tides are affected by the combined gravitational pulls of the sun and moon. The difference between high and low tides is smallest during new and full moon phases.

How does the alignment of the sun, Earth, and moon affect the ocean tides?

• Smaller difference in tides.

• Larger difference in tides.

In what relative positions are the sun, Earth and moon when tides are low?

• Parallel

• Perpendicular

The relative position of Earth's axis to the sun results in -

• fewer tides during the winter and fall months

• more tides during the fall and winter months

Which location on Earth is experiencing a low tide?

• Location W

• Location X

• Location Y

• Location Z

A student fills the water balloon with water and holds it on both ends to model tides. The student notices the balloon bulging in the middle . What causes the balloon to bugle?

• The balloon is bulging because the water is heavier at the bottom.

• The balloon is bulging because of the gravitational pull of Earth.