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