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Ocean waves, tides

Total questions: 62

Worksheet time: 57mins

Name
Class
Date
1.
Water does not move, _____________ moves.
a)
Water
b)
Energy
c)
Waves
d)
Fish
2.
What is a subsurface current that is nearshore and that pulls objects out to sea?
a)
Undertow
b)
Longshore Current
c)
Tsunami
d)
Swells
3.
Which of the following is not a cause of a tsunami? 
a)
Volcanic eruption
b)
Tornado
c)
Submarine earthquakes
d)
Landslide
4.
What is a local rise in sea level near the shore that is caused by strong winds from a storm?
a)
Undertow
b)
Storm surge
c)
Tsunami
d)
Longshore current
5.
What is the periodic rise and fall of the water level in the oceans?
a)
Tide
b)
Tidal range
c)
Spring Tide
d)
Neap Tide
6.
What is the increased tide that occurs two times in a month at the new and full moons?
a)
Tidal range
b)
Spring Tide
c)
Neap Tide
d)
Tide
7.
What is the difference between levels of ocean water at high and low tide?
a)
Tide
b)
Tidal range
c)
Spring tide
d)
Neap tide
8.
What is a tide of minimum range that occurs during the 1st and 3rd quarters of the moon?
a)
Tide
b)
Tidal range
c)
Spring tide
d)
Neap tide
9.
We can measure wavelength by measuring the distance from crest to crest or ______ to _______.
a)
amplitude, amplitude
b)
length, width
c)
trough, trough
d)
height, height
10.
Tides are caused by
a)
strong winds that blow over ocean waters.
b)
the interaction of Earth, the moon and the sun.
c)
the shifting of the plates on the ocean floor.
d)
variations in the salinity of ocean water
11.

Approximately how many hours will pass between high tide and the following low tide? (Think about the rotation of the Earth between high tides.)

a)

6 hours

b)

12 hours

c)

18 hours

d)

24 hours

12.
Surface ocean currents are generated mostly by
a)
the Coriolis effect
b)
water density
c)
tides
d)
wind
13.
The vertical distance between the highest and lowest points of a wave is called
a)
wavelength
b)
wave height
c)
crest
d)
trough
14.
The height of a wave is MOST affected by the
a)
speed of the wind
b)
speed of the ocean
c)
salinity of the ocean
d)
amount of solar energy
15.
Which of the following is not a factor affecting wave height?
a)
direction wind is blowing
b)
wind speed
c)
length of time wind is blowing
d)
distance wind is blowing
16.
Which direction do ocean waves move?
a)
back and forth
b)
up and down
c)
in a side-to-side motion
d)
in a circular motion
17.
What is the distance between two waves?
a)
wave period
b)
wave frequency
c)
wave length
d)
wave height
18.
Stronger winds create __________ waves.
a)
larger
b)
smaller
19.

Wave time =?

a)

wave speed

b)

wave period

c)

wavelength

d)

none of the above

20.
Which interaction of waves is known for waves bending between mediums?
a)
Reflection
b)
Refraction
c)
Diffraction
d)
Interference 
21.
What is the difference between levels of ocean water at high and low tide?
a)
Tide
b)
Tidal range
c)
Spring tide
d)
Neap tide
22.
What type of tides would this arrangement of earth-moon-sun create?
a)
neap tide
b)
spring tide
c)
new moon tide
d)
full moon tide
23.
What is a tide?
a)
large and small waves along a coastline
b)
the daily rise and fall of the earth's waters along a coastline
c)
a red elephant from Alabama
d)
deep and shallow ocean reservoirs near a coastline
24.

Which wave in the diagram has the greatest wavelength?

a)

1

b)

2

c)

3

d)

4

25.
Which letter(s) represent the trough of the wave?
a)
A
b)
B & D
c)
D
d)
C & G
26.
Which vocabulary term is used to identify the distance between points C & G?
a)
Amplitude
b)
Crest
c)
Frequency
d)
Wavelength
27.
The highest point on a wave is:
a)
the crest
b)
the trough
c)
the top
d)
the coast 
28.

A tsunami is caused by underwater

a)

Fish

b)

Explosions

c)

Earthquakes

d)

Exploration

29.

What does Tsunami mean?

a)

Big wave

b)

Harbour wave

c)

Earthquake wave

d)

Wave goodbye

30.

As the waves travel through shallow water need land they get

a)

bigger

b)

smaller

c)

stay the same

31.

What are tsunamis commonly known as

a)

Large waves

b)

tidal waves

c)

super waves

d)

crash waves

32.

The top of the tsunami is called a

a)

high

b)

peak

c)

crest

d)

ceiling

33.

The bottom of a tsunami is called a

a)

trough

b)

floor

c)

hole

d)

cellar

34.

What should you do if you think a tsunami is coming?

a)

Go to higher ground

b)

Go to the beach

c)

Find a boat

d)

Hide in your house

35.

Before a tsunami the coastal sea depth normally

a)

Rises suddenly

b)

falls suddenly

c)

gets really hot

d)

fills with fish

36.

The Indonesian tsunami was so big it affected how many countries.

a)

4

b)

14

c)

24

d)

34

37.

How big are tsunami waves

a)

10 feet

b)

100 feet

c)

1000 feet

d)

1000 000 feet

38.

1. What is a tsunami?

a. A large storm with very high speed winds

b. A tropical cyclone that occurs in the Pacific Ocean

c. A large and powerful ocean wave

d. A type of tornado

e. Any earthquake that causes significant damage

a)

a

b)

b

c)

c

d)

d

e)

e

39.

2. What natural event can cause a tsunami?

a. Earthquake

b. Volcanic eruption

c. Landslide

d. A glacier breaking off into the ocean

e. All of the above

a)

a

b)

b

c)

c

d)

d

e)

e

40.

3. How far can a tsunami travel?

a. Less than 1 mile

b. 10 miles

c. 100 miles

d. 500 miles

e. Over 1000 miles

a)

a

b)

b

c)

c

d)

d

e)

e

41.

5. Where do most of the Tsunamis in the world occur?

a. Great Lakes

b. Atlantic Ocean

c. Pacific Ocean

d. Arctic Ocean

e. Southern Ocean

a)

a

b)

b

c)

c

d)

d

e)

e

42.

6. Tsunamis are caused by ___________.

a. Wind traveling over the surface of the ocean

b. The rotation of the Earth

c. The gravitational pull of the Moon

d. A large displacement of water

e. All of the above

a)

a

b)

b

c)

c

d)

d

e)

e

43.

True or False: Although tsunamis are sometimes called tidal waves, they have nothing to do with the ocean's tides.

a. TRUE

b. FALSE

a)

a

b)

b

44.

8. Most tsunamis are caused by what natural event?

a. Earthquake

b. Volcanic eruption

c. Landslide

d. A glacier breaking off into the ocean

e. Hurricane

a)

a

b)

b

c)

c

d)

d

e)

e

45.

9. What do we call a series of waves generated by a tsunami?

a. Tides

b. Wave train

c. Wave town

d. Wave farm

e. Sets

a)

a

b)

b

c)

c

d)

d

e)

e

46.

The top of the tsunami is called a

a)

high

b)

peak

c)

crest

d)

ceiling

47.

A ____________ is a crack in the Earth's surface.

a)

Tsunami

b)

fault

c)

epicenter

d)

seismologist

48.

An ____________ is the location on the Earth's surface above where the earthquake began.

a)

fault

b)

epicenter

c)

tsunami

d)

volcano

49.

___________________ is the name of a series of waves that is so powerful it can destroy a city.

a)

Thunder Storm

b)

earthquake

c)

volcano

d)

Tsunami

50.

Most Tsunamis are caused by ___________________.

a)

earthquakes

b)

floods

c)

volcanoes

d)

rain

51.
An instrument that detects and measures earthquakes is a 
a)
seismogram
b)
focus seismic map
c)
focus
d)
seismograph 
52.

REVIEW: What are the puzzle pieces of the Earth's surface called?

a)

Tectonic plates

b)

Puzzles

c)

Earthquakes

53.
The place where an earthquake originates inside the Earth's surface is called...
a)
Epicenter
b)
Hypocenter (focus)
c)
Underground
d)
Crust
54.

Check off the three causes of tsunamis:

a)

earthquake

b)

thunderstorm

c)

volcanic eruption

d)

submarine landslide

e)

tornado

55.

When a tsunami reaches shore what happens to its speed?

a)

it stays the same

b)

it moves faster

c)

it moves slower

56.

Tsunamis move very slow, typically around 10 miles per hour.

a)

True

b)

False

57.

Tsunamis can occur in any major body of water.

a)

True

b)

False

58.

If you were on a boat in the open ocean, why might it be difficult to detect a tsunami?

a)

Gravity flattens out the enormous waves caused by undersea earthquakes

b)

Tsunamis are caused by the natural cycle of tides

c)

Tsunamis occur in seas & lakes, not oceans

d)

Boats usually float on large waves

59.

How do tsunami waves compare to regular ocean waves?

a)

They're generally much flatter.

b)

They're generally much wider.

c)

They extended deeper underneath the water's surface.

d)

They contain much more debris.

60.

How are tsunami waves like electromagnetic waves?

a)

They are caused primarily by earthquakes.

b)

They can usually only travel through water.

c)

They can travel long distance & carry lots of energy.

d)

They travel along at exactly the speed of soun.d

61.

Tsunamis can be detected ahead of time by devices that measure:

a)

The height of the ocean wves

b)

The destructiveness of natural disasters

c)

Underwater energy

d)

Seismic activity

62.

Which of the following is an opinion about tsunamis?

a)

The 2004 tsunami caused millions of dollars in damage.

b)

The 2004 tsunami was the worst natural disaster of this century.

c)

The 2004 tsunami was caused by a very large earthquake.

d)

The 2004 tsunami destroyed several coastal areas on the Indian Ocean.

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