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Unit 1 Review 8th Science
Test Description: Review over Unit 1: Introduction to Physical Science
Instructions: Answer all questions to get your test result.
1) Scientists use models to...
A
Enhance the color scheme of an object
B
Gain a magnified view of an object
C
Study an object by creating a smaller, larger, or computerized version of the original
D
Make an exact replica of an item
2) The SI Unit for measuring luminosity of an object is
A
Liter
B
Kelvin
C
Candela
D
Ampere
3) This type of system allows outside materials to make an impact on it:
A
open
B
bilateral
C
closed
D
forensic
4) The purpose of keeping a science notebook is to
A
ensure model development
B
focus the scientist on extraneous details that do not impact the study
C
gain experience recording an analyzing results like a real scientist
D
Practice creative writing
5) This SI unit measure the amount of matter in a given substance
A
mole
B
ampere
C
liter
D
gram
6) Which material is the least dense?
A
styrofoam
B
wood
C
brick
D
steel
7) One way to test density is to
A
weigh it
B
compare its mass/volume to a known liquid like water
C
observe it using sight
D
knock on it
8) What is the first step of successfully solving a model problem?
A
Consider the problem
B
Reinvestigate the question
C
Carry out the plan
D
Read the problem carefully
9) A group of interacting parts is known as
A
a model
B
a collection
C
a clock
D
a system
10) You want to measure how much your cat weighs. What SI unit would you use?
A
gram
B
meter
C
ounces
D
liter
*select an answer for all questions
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