REVISION SHEET GRADE 6(AK)
2nd term, 2nd Half(2013/14)
Choose the letter of the best answer.
1.The table below shows the amounts of different types of surface water on Earth.
Water source
Groundwater
Lakes
Rivers
Swamp water
Water volume (cubic miles)
5,614,000
42,320
509
2,752
Based on the table, about how much water is available to provide habitat for wildlife?
A. just over 3,000 cubic miles
B.
nearly 43,000 cubic miles
C. about 46,000 cubic miles
D. close to 6,000,000 cubic miles
2. On an island near the equator, the sun’s energy causes ocean water to evaporate during the day. In the
afternoon, heavy rains fall. This process is repeated during the summer months. What does this
example best show?
A. how most water on Earth is in the form of water vapor
B. how land is the main source of water during the water cycle
C. how the sun is the main source of energy for the water cycle
D. how the ocean is large enough that it never runs out of water
3. If a warm wind passes over snow, the snow can be heated rapidly. When this happens, the snow can
change directly into water vapor without first becoming liquid water. What is the correct term for this
process?
A. melting
B. deposition
C.
sublimation
D.
evaporation
4. After a day of rain, Samuel observed that a field on his family’s farm was covered in water. The next
morning, the field appeared dry. Which of these statements is the least likely explanation of what
happened to the water?
A. The water was absorbed into the soil.
B.
C. The water evaporated into the atmosphere.
ground as runoff
The water seeped through the ground.
D.
The water slowly trickled to lower
5. The circle graph below shows the distribution of water and land on Earth.
Which statement best explains the graph?
A. A is land, B is fresh water, and C is salt water
B. A is salt water, B is fresh water, and C is land
C. A is fresh water, B is land, and C is salt water
D. A is salt water, B is land, and C is fresh water
6. Which process changes water into a gaseous state?
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REVISION SHEET GRADE 6(AK)
2nd term, 2nd Half(2013/14)
A. deposition
B.
C. precipitation
E.Evaporation
sublimation
D. condensation
E. Evaporation
7. A weather report stated that rain was likely with some snow and hail also possible. Which statement
is not true about rain, snow, and hail?
A. They all form in clouds.
B.
They are all precipitation.
C. They are all the same state.
D.
They are all made of water.
8. Tai grows plants in a container called a terrarium, as shown below. He keeps the terrarium on a sunny
windowsill.
The terrarium is closed, so Tai cannot add water to the plants. However, the plants have
enough water to grow. Which of these statements best explains why the plants always
have enough water?
A. The air cannot hold all of the water vapor.
B. Water is unable to evaporate from the soil.
C. The plants take up water and store it in their stems and leaves.
D. Energy from the sun cycles water through the soil, the plants, and the air.
Fill in the blanks.
9. Water is called the universal _Solvent___ because it dissolves a large number of substances.
10. The continuous movement of water between the atmosphere, the land, the oceans, and living things is
called the _Water cycle____.
11. Any form of water that falls to Earth’s surface from the clouds is called _precipitation___..
13. Which of the following is a way that water reaches evaporates from plants?
A. condensation
B. evaporation
C. sublimation
D. Transpiration
14. A certain percentage of water that falls to Earth’s surface as precipitation each year does not
immediately return to the water cycle. Which of the following is the best explanation as to what
happens to most of this water?
A. The water falls into the ocean, where it evaporates back into the atmosphere.
B. The water is stored as snow and ice on the Earth’s surface.
C. The water molecules are broken down into hydrogen and oxygen atoms.
D. The water is absorbed and used by plants.
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REVISION SHEET GRADE 6(AK)
2nd term, 2nd Half(2013/14)
15. The diagram below shows the changes among the three states of water.
Fill in each of the three blank lines with the correct term
for the change of state shown by the arrows. In the key,
circle the correct word to show whether water absorbs or
releases energy in the changes of state shown by that type
of arrow.
16.Water on Earth constantly moves between Earth’s surface
and its atmosphere. How does water arrive at Earth’s surface?
A.
B.
C.
D.
through runoff
through evaporation
through condensation
through precipitation
17. Juanita watches a rain puddle as she plays outside. The figure below shows how the puddle changes
while Juanita observes it during the day.
What process is Juanita observing?
A.
B.
C.
D.
condensation
evaporation
precipitation
runoff
18. Oceans receive fresh water from precipitation and rivers.
Yet the sea levels of ocean do not change very much from
these actions. Why are the sea levels affected so little?
A.
B.
C.
D.
Water evaporates over the ocean’s surface.
Water seeps underground beneath the ocean.
Water flows back into rivers from the oceans.
Water is deposited back on land through ocean wave action.
19. Tara is studying the water cycle. She knows that in order for evaporation to happen, there needs to be
a source of energy that generates heat. What is the main source of energy that drives the water cycle?
A.
A. sun
B. Clouds
C. Oceans
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D. Wind
REVISION SHEET GRADE 6(AK)
2nd term, 2nd Half(2013/14)
20. Maria draws the following diagram of the water
cycle.
What should she label the process of water moving
from the ocean to the atmosphere?
A.
C.
condensation
infiltration
B.
D.
evaporation
precipitation
21.Toby draws the following diagram of the water
cycle.
What should he label the process of water moving
down the side of the mountain?
A.
condensation B.
evaporation
C.
precipitation D.
runoff
22. This figure represents an environment of the
ocean.
What zone is it in?
A.
C.
tide pool
near shore
B.
D.
intertidal
open ocean
23.The deep ocean is home to many kinds of animal life. Fish,
animals with shells and worms live down there. But, there are no
plants. Why don’t plants grow in the deep ocean?
A.
C.
The water is too cold. B.
There is not enough light.
The salinity is too high.
D.
The soil on the ocean floor can’t grow plants.
24.The major food source for certain whales is plankton. What are plankton?
A.
C.
different types of plants
seeds from ocean plants
B.
D.
microscopic organisms
tiny saltwater fish
25. Plantlike plankton do an important job for the ocean and for the environment. What is this job?
A.
B.
C.
D.
They help keep ocean water at a steady temperature.
They remove carbon dioxide from the air and release oxygen.
They prevent the population of large fish from growing too fast.
They act like filters and remove chemicals and other poisons from the water.
26. The food chain is a way to describe what animals in a certain environment eat. What is the first link in
the food chain of the ocean?
A.
squid
B.
sharks
C.
shellfish D.
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plankton
REVISION SHEET GRADE 6(AK)
2nd term, 2nd Half(2013/14)
Define ocean currents.
_____________________________________________________________________________________
_____________________________________________________________________________________
Name and give examples of life in Oceans zones.
1) Intertidal zone: Example: crab, turtle, starfish,
2) Near shore zone: Examples: Fish. jellyfish, shrimps, plankton, sea weeds
3) Open Ocean zone: Example: dolphins, tuna, sword fish, whales.
What are coral reefs?
A largest structure on earth built by living organisms.Coral reefs are very delicate and can easily
damaged.
Name all three ocean regions according in sequence:
1) Continental shelf
2) Continental slope
3) Abyssal plain
Explain the role of the sun in the water cycle.
The sun is the main source of energy during water cycle to evaporate the water so the water cycle can
continue.
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