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8th Grade Science Review
Test Description: Science Review
Instructions: Answer all questions to get your test result.
1) You have a glass beaker filled with a mixture of hot chemicals. The beaker and mixture have a mass of 247 grams. If you want to know the mass of the chemicals only, what should y
A
Separate the chemicals into their individual components.
B
Find a very light container that can hold the chemicals.
C
Obtain the mass of an empty glass beaker of the same size.
D
Pour the chemicals directly on a spring scale.
2) Which of the following is a safe way to conserve resources in the lab?
A
Clean up all equipment at the same time.
B
Use older, slightly damaged equipment.
C
Clean up chemical spills quickly.
D
Carefully measure chemicals
3) A student hears a scientist on the news that says he thinks there is life on another planet. What is the most important question that the student should ask in order to crit
A
Does the scientist think there is life in other galaxies too?
B
What evidence is the scientist basing his statement on?
C
Where did the scientist study and go to school?
D
Who works for the scientist and helps in his research?
4) Which of the following questions about frogs could be answered through a scientific investigation?
A
What kind of dreams do frogs have?
B
How do the diets of different frog species differ?
C
Are frogs able to play musical instruments?
D
Are some frog species happier than other frog species?
5) The magnification of the eyepiece on a compound microscope is 10X. The magnification of the objective lens is 100X. What is the total magnification?
A
10X
B
110X
C
90X
D
1,000X
6) Which of the following objects would make the best model of a blood vessel?
A
A cotton string
B
A rubber tube
C
A steel pipe
D
An electrical wire
7) A student is planning an investigation about plants. She says, “Plants grow better in sunlight.” This statement is an example of –
A
an investigation
B
data
C
a hypothesis
D
a procedure
8) You have a bag of cookies that says it contains 34 grams. Which tool would you use to check to be sure that the bag actually contains 34 grams?
A
Meter stick
B
Graduated cylinder
C
Triple beam balance
D
Spring scale
9) Which type of diagram provides the most information about the feeding relationship among organisms in an ecosystem?
A
Energy chain
B
Energy pyramid
C
Food web
D
Food chain
10) What is one way that plant and animal cells are different?
A
Only plant cells contain a nucleus.
B
Only plant cells have cell walls.
C
Only animal cells contain cytoplasm.
D
Plant cells do not have cell membranes.
*select an answer for all questions
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