Ocean Waves and Tides

Ocean Waves and Tides

Multiple Choice

Even though this is May, yesterday in Cleveland there was snow. Which is most likely a true statement?

• This proves that there is no global warming

• This was most likely an isolated weather event.

• This was due to a hurricane on the Great Lakes

Poll

Tides are something that happens in our oceans. They are caused by

• The wind

• ocean currents

• the moons gravity

• The Earth's spin

Parts of a wave

• Crest-The highest point of a wave

• Trough-The lowest point of a wave

• Wavelength-The distance between the same point on each wave

• Amplitude-The height of a wave from the mid line (sea level)

Multiple Choice

The distance from one point on a wave to the same point on the next wave is

• Wavelength

• Amplitude

• Trough

• Crest

Multiple Choice

The highest point of a wave is the

• Wavelength

• Amplitude

• Trough

• Crest

Multiple Choice

The lowest point of a wave is the

• Wavelength

• Amplitude

• Trough

• Crest

Multiple Choice

The height of a wave from the sea level is

• Wavelength

• Amplitude

• Trough

• Crest

Surface Waves

• Particles in a wave move in a circular motion

• This is why things in the ocean have an up and down appearance

• Think of a bobber

Multiple Choice

What type of motion do particles in a wave have

• Side to side

• Square

• Triangular

• Circular

Wave Motion and Depth

• The circular motion becomes less as you go deeper

• Eventually the wave motion can no longer be felt

Multiple Choice

Wave motion can be felt at the bottom of the ocean

• True

• False

Breaking Waves

• The Circular motion becomes elliptical due to the friction on the shore

• The sea floor pushes up the wave so height increases

• Wave breaks on shore and washes up the beach

• Backwash happens due to circular motion and the next wave

Multiple Choice

Wave height increases due to

• Contact with sea floor

• Circular motion

• Sea gulls

Tusnami Video

https://www.youtube.com/watch?v=Wx9vPv-T51I

Multiple Choice

What causes a Tsunami

• Sand

• Earthquakes

• Palm trees

• Circular motion

Multiple Choice

Tsunamis act the same way as other ways

• True

• False

Tides

• Sea level is the average level of the oceans surface at any given time

• Tides are the periodic rise and fall of the gravitational force between the Earth and the Moon and the Earth and the Sun

• Tidal Range- The difference in water level between a high tide and a low tide.

Multiple Choice

Which of the following is not responsible for tides

• The Sun

• The Moon

• The Earth

• Ocean Currents

Multiple Choice

Which have higher tides

• Spring Tide

• Neap Tide

Multiple Choice

The height of a wave from the sea level is

• Wavelength

• Amplitude

• Trough

• Crest