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Science
Test Description: May 2007 OAA
Instructions: Answer all questions to get your test result.
1) An air hose extends above and below the surface of the water. Which statement explains why the hose would look broken?
A
Light is refracted as it moves from air to water.
B
Light is reflected as it moves from air to water.
C
Light is absorbed as it moves from air to water.
D
Light is destroyed as it moves from air to water.
2) After a year, a pond containing a turtle, trout, sunfish, and a tadpole dries up, what organism in the pond ecosystem is able to take in oxygen?
A
trout
B
turtle
C
tadpole
D
sunfish
3) In the winter, the pond starts to freeze. The ducks leave the pond. They migrate to warmer climates. Why?
A
The ducks have difficulty finding food.
B
The ducks have too many enemies.
C
The ducks have to lay eggs near water.
D
The ducks have too few places to hibernate.
4) Which organism uses sunlight to produce food that others eat?
A
sunfish
B
butterfly
C
green algae
D
snail
5) Which organism in the pond ecosystem completely changes its physical features and food source when it becomes an adult?
A
trout
B
duck
C
butterfly
D
turtle
6) Which is the first step in a design process?
A
revise the solution
B
identify possible solutions
C
test the possible solution
D
describe the problem
7) Sharpening a pencil and tearing a paper are examples of physical changes. Why?
A
There is a change in how the objects are used
B
There is a change in the materials from which the objects are made
C
There is a change in both the appearance of the objects and the materials from which they are made
D
There is a change in the appearance of the objects
8) Fruit juice is in both a metal can and a plastic bottle in the same cooler. Why does the metal can feel colder than the plastic bottle?
A
The outside of the metal can is drier than the plastic bottle
B
The metal can holds colder juice than the plastic bottle
C
Plastic is a better conductor of thermal energy than metal
D
Metal is a better conductor of thermal energy than plastic
9) A student places a ball on the ground and kicks it, why does it move?
A
The kick decreases the force of gravity acting on the ball
B
The kick applies a contact force to the ball
C
The kick decreases the weight of the ball
D
The kick removes friction between the ball and the ground
10) A glass of water at 20 degrees C has an ice cube placed into it, it now is 12 degrees C and it melts, why?
A
The ice cube does not melt because cold flows into the ice cube from the water
B
The ice cube does not melt because thermal energy transfers from the ice cube to the water
C
The ice cube melts because thermal energy transfers to the ice cube from the water
D
The ice cube melts because cold flows out of the ice cube to the water
*select an answer for all questions
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