Waves and Tides

tide

alternate rising and falling of the ocean caused by the gravitational pull of the moon and the Sun

Wave A has a long fetch. Wave B has a short fetch. Which of the following statements is true? Wave A is more powerful than Wave B. Wave B is more powerful than Wave A. Both waves are equally powerful.

Generally, the size of the fetch is more important than wind speed. A strong wind with a short fetch will create smaller and less powerful waves than a weaker wind with a long fetch. Wave A is more powerful than Wave B.

fetch

distance over which wind blows without interruption or change of direction

Capillary waves travel ________ long waves. the same speed as faster than slower than

faster than

crest

highest part of a wave

Charmane throws a rock into a lake. She has created _____. impact waves spring tides wind-generated waves deep-ocean waves

impact waves

trough

lowest part of a wave

Earth's tides are primarily caused by _____. the Sun the moon wind underwater earthquakes

the moon

The amount of time it takes for a two consecutive wave crests to pass a given point is the _____. fetch crest trough wave period

wave period

In Beachville, the last high tide occurred at 1:00 p.m. The next high tide will happen around _____. 1:25 a.m. 1:50 p.m. 7:25 p.m. 7:50 a.m.

1:25 a.m.

Spring tides happen when _____. The Sun and moon are at right angles to Earth. The Sun, moon, and Earth are aligned. The earth is closest to the moon. The earth is farthest from the moon.

The Sun, moon, and Earth are aligned.