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WorksheetsCH 15 Oceans
Total questions: 20
Worksheet time: 10mins
Abyssal plains are _____ on the ocean floor.
very deep canyons
flat, sediment-covered areas
continuous volcanic mountain ranges
_____are the deepest parts of the ocean.
Trenches
Mid-ocean ridges
Continental margins
A tsunami is a wave with a large
wavelength
wave base
wave height
Spring tides occur when the alignment of Earth, the Sun, and the Moon form
a circle
a straight line
a right angle
Why are plastic soda-can rings dangerous to ocean organisms?
They cause coral bleaching.
Ocean organisms often get tangled in them.
They cause increases in carbon dioxide levels.
Identify parts of a wave. What is labeled (A)?
crest
trough
wave height
wavelength
Identify parts of a wave. What is labeled (B)?
crest
trough
wave height
wavelength
Identify parts of a wave. What is labeled (C)?
crest
trough
wave height
wavelength
Identify parts of a wave. What is labeled (D)?
crest
trough
wave height
wavelength
distance between a wave crest and the trough
wavelength
trough
crest
wave height
highest part of a wave
wavelength
trough
crest
wave height
lowest part of a wave
wavelength
trough
crest
wave height
rise and fall of sea level caused by the alignment of the Sun, the Moon, and Earth
wavelength
trough
crest
tide
distance from one wave crest to the next wave crest
wavelength
trough
wave height
tide
Which situation is caused by too much fertilizer entering the oceans?
algal blooms
excess sediments
reduction in calcium levels
Coral bleaching is caused by changes in ocean
temperatures.
calcium levels.
carbon dioxide levels.
Why are Earth's oceans salty?
Rain washed salts into them.
They contain a lot of water vapor.
Algal blooms in the ocean produced salt.
Ocean waves move water
to form tides.
long distances.
in a circular motion.
Ocean surface currents are caused by
wind
gravity
density
Density currents move ocean water
upward
downward
horizontally
