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8th Grade Science TCAP Review
Test Description: TCAP Review for 8th grade
Instructions: Answer all questions to get your test result.
1) When copper reacts with oxygen in the air, a color change takes place that turns the surface of the copper green. What type of change occurs to produce this color change?
A
physical change
B
chemical change
C
mixing
D
dissolving
2) Two different fossils found in the same layer of sedimentary rock are most likely
A
fossils that formed in lava that cooled.
B
the remains of organisms that lived in different climates
C
the remains of organisms that have the same relative age.
D
fossils of the same species.
3) Which type of magnet produces a magnetic field most similar to Earth's?
A
horseshoe magnet
B
bar magnet
C
electromagnet
D
temporary magnet
4) As the distance between two objects increases, the force of gravity between them
A
decreases.
B
remains the same.
C
increases.
D
disappears.
5) Soap has a slippery feel and a bitter tasste. What do these characteristics suggest about soap?
A
It is a base.
B
It is a salt.
C
It is a neutral substance.
D
It is an acid.
6) Which two pieces of laboratory equipment can be used to find and compare the densities of different wood block samples?
A
balance and thermometer
B
graduated cylinder and microscope
C
beaker and stopwatch
D
balane and ruler
7) Which population would e best adapted to life in a deep lake?
A
a population of organisms that get their energy from the sun
B
a population of organisms that use fins for movement
C
a population of organisms with wings
D
a population of organisms with long legs
8) Which of these is most likely to result from clear-cutting a forest to create space for a new shopping mall?
A
decreased carbon dioxide production
B
a large number of plant-based medicines
C
loss of habitat and decreased biodiversity
D
increased oxygen production
9) Which substance below is a compound?
A
Na
B
O
C
H2O
D
Cl
10) Which is an example of a physical change?
A
the formation of silver sulfide when silver reacts with sulfur in the air
B
the condensation of water vapor on the outside of a cold can of soda
C
burning methane gas to produce water and carbon dioxide
D
combining vinegar and baking soda to form a salt and water
*select an answer for all questions
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