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8th Grade Physical Science CRCT Review
Test Description: CRCT review
Instructions: Answer all questions to get your test result.
1) As frequency increases, wavelength ___________
A
decreases
B
increases
C
remains constant
D
becomes faster
2) A shark accelerates from 20 m/s to 36 m/s in 4 seconds. What is the shark’s acceleration?
A
8
B
4
C
10
D
6
3) What is the atomic symbol for silver?
A
Ag
B
Au
C
Na
D
He
4) The bending of a wave as it passes an obstruction is called
A
refraction
B
reflection
C
interference
D
diffraction
5) As amplitude increases, volume
A
gets softer
B
remains the same
C
gets louder
D
goes away
6) The __________ of a wave is how many wavelengths pass a fixed point each second.
A
amplitude
B
compression speed
C
frequency
D
velocity
7) Which of the following is a physical change?
A
water freezing
B
paper burning
C
metal rusting
D
baking bread
8) Which of the following is a chemical change?
A
water freezing
B
metal rusting
C
cutting hair
D
ripping paper
9) The distance between one crest and the next crest is the wave’s
A
speed
B
wavelength
C
frequency
D
amplitude
10) The law of conservation of matter says
A
Matter is made of molecules and atoms.
B
Matter is made of chemicals.
C
Matter cannot be created or be destroyed.
D
Matter cannot leave Earth.
*select an answer for all questions
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