NAME :
CLASS :
Tides
DATE :
26 Questions
1.
It takes 12 h & 25 min for this location to get from high tide
to low tide. What type of tides does this community
experience?
2.
3.
4.
5.
a) semidiurnal tides
b) mixed semidiurnal tides
c) diurnal tides
d) neap tides
A[n] ______________ tide occurs when the sun is at right
angles to the line between Earth and the moon.
a) high
b) neap
c) low
d) spring
Di erences in the moon's and sun's pull on di erent sides
of the Earth cause _________.
a) gravity
b) lunar phases
c) tides
d) dabbing
A[n] ___________ tide occurs when the sun, Earth, and the
moon are nearly in a line.
a) spring
b) high
c) low
d) neap
The bulge of water on the side of the Earth closest to the
moon produces ___________.
a) high tide
b) low tide
c) neap tide
d) spring tide
Help
6.
How many tides (both low & high) do we have each day if it
mixed semidiurnal?
a) 3
b) 4
c) 1
d) 2
7.
8.
9.
Which of the following pictures is showing a high tide?
a) A
b) B
c) C
d) D
What force causes tides to happen on the earth?
a) The pull of the gravity from the moon on
the earth
b) People jumping up and down on the
surface of the earth
c) The sun orbiting around the earth
d) The animals in the ocean
If there is a high tide on the north side of the earth, what
type of tide will occur on the south side?
10.
a) low tide
b) high tide
c) spring tide
d) neap tide
Carolina beaches have 2 high and 2 low tides every day. If
the beach at 12 pm (noon) and it is high tide, then what tide
will you see If you return about 6 hours later?
a) high
b) low
c) none
d) spring
11.
What type of tides would this arrangement of earth-moonsun create?
a) neap tide
b) spring tide
c) new moon tide
d) full moon tide
12.
What type of tide would this arrangement of earth-moonsun create?
13.
a) full moon tide
b) new moon tide
c) neap tide
d) spring tide
If tides alternate from high to low and there are two of each
type of tide a day, about how many hours will generally be
between each di erent tide?
14.
a) 2 hours
b) 6 hours
c) 12 hours
d) 24 hours
What happens to the shape of the Earth due to the Moon's
gravity?
15.
a) Slightly football- or "M&M"-shaped
b) Soccer ball-shaped
c) Nothing
d) Hockey puck-shaped
A[n] ______________ tide occurs when the sun is at right
angles to the line between Earth and the moon.
a) high
b) neap
c) low
d) spring
16.
Which tide would be caused by the positions of the sun and
moon in the picture?
a) High Tide
b) Low Tide
c) Spring Tide
d) Neap Tide
17.
Which tide would be caused by the positions of the sun and
moon in the picture?
18.
a) High Tide
b) Low Tide
c) Spring Tide
d) Neap Tide
If a Spring Tide occurs during a New Moon or a Full Moon,
when does a Neap Tide occur?
19.
20.
a) Never
b) Also during a New Moon and Full Moon
c) During a rst quater or 3rd quarter moon.
d) The tides are always at Neap Conditions
When does a Spring Tide occur?
a) Only in the Spring Season
b) During a New Moon and Full Moon
c) during a rst quarter or third quarter
moon.
d) during the full moon and third quatrter
moon.
____________ is what you call an area with ONE HIGH and
ONE LOW tide each day.
a) Diurnal Tide
b) Semi Diurnal Tide
c) Mixed Tide
d) Rip Tide
21.
Tides that have two equal high and low water levels each
day are called
22.
a) Diurnal Tides
b) Semidiurnal Tides
c) Semidiurnal mixed Tides
d) Rip Tide
____________ is what you call an area with TWO HIGH and
TWO LOW tides each day, but they are NOT the same size.
23.
a) Diurnal Tide
b) Semi Diurnal Tide
c) Mixed Tide
d) Rip Tide
In a semidiurnal mixed tide, the greatest height the water
level reaches is called the
a) Lower high water
b) High water
c) Higher lower water
d) Higher high water
24.
The zero depth reference for navigational charts is also
called the
25.
a) tidal datum.
b) minus tide.
c) high water mark
d) lower low water mark.
When the tidal period turns from ebb to ood, there is a
period of _______ water.
a) slack
b) standing
c) slow
d) fast owing
26.
The sun's e ect on tides is only ____% that of the moon.
a) 42
b) 62
c) 46
d) 50
Answer Key
1.
2.
c
b
8.
9.
a
b
15.
16.
b
d
22.
23.
c
d
3.
4.
c
a
10.
11.
b
b
17.
18.
c
c
24.
25.
a
a
5.
6.
a
b
12.
13.
c
b
19.
20.
b
a
26.
c
7.
a
14.
a
21.
b