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