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8th Gr Science Fall 2015
Test Description: To help the students prepare for the final
Instructions: Answer all questions to get your test result.
1) A test is being conducted to determine if the amount of light a plant is exposed to effects the growth rate of the plant. Which of the following is the Independent Variable?
A
The amount of light.
B
Type of seed
C
The amount of water
D
The type of container
2) A firework exploding is:
A
A physical change because a flame is produced
B
A chemical change because it looks nasty
C
A chemical change because it is still a firework.
D
A physical change because a smell is produced.
3) The dependent variable is what is measured (depends upon the independent variable)
A
False
B
True
4) If you realize your hypothesis is wrong during your experiment, it is okay to go back and change it.
A
True
B
False
5) In a controlled experiment, only 1 variable is changed by the scientist
A
True
B
False
6) The first step of the scientific method is to perform an experiment
A
True
B
False
7) Which of the following is NOT true about the atoms of a solid?
A
Atoms are arranged in a fixed shape and have a constant volume
B
Atoms are vibrating
C
Atoms are not moving at all
D
Atoms are tightly packed
8) The atoms of gasses move
A
vibrate
B
slowly
C
very quickly
D
do not move at all or hardly moves
9) Which is true about a chemical change?
A
Chemical changes can only take place with liquids.
B
The change is reversible.
C
A new substance is created that is different than the original
D
A chemical change can only take place with a chemical.
10) Which of the following is true about physical changes?
A
New matter is created.
B
Atoms rearrange to make a new substance.
C
The matter stays the same just in a different form.
D
You must be strong to make the change.
*select an answer for all questions
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