8th Grade Physical Science CRCT Review Question Preview (ID: 18620)
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The distance between one crest and the next crest is the wave’s
a) amplitude
b) frequency
c) wavelength
d) speed
Which of the following is a chemical change?
a) metal rusting
b) water freezing
c) ripping paper
d) cutting hair
Which of the following is a physical change?
a) metal rusting
b) water freezing
c) baking bread
d) paper burning
The __________ of a wave is how many wavelengths pass a fixed point each second.
a) compression speed
b) velocity
c) frequency
d) amplitude
As amplitude increases, volume
a) gets louder
b) gets softer
c) remains the same
d) goes away
The bending of a wave as it passes an obstruction is called
a) interference
b) diffraction
c) refraction
d) reflection
What is the atomic symbol for silver?
a) Na
b) He
c) Au
d) Ag
As frequency increases, wavelength ___________
a) increases
b) decreases
c) remains constant
d) becomes faster
A shark accelerates from 20 m/s to 36 m/s in 4 seconds. What is the shark’s acceleration?
a) 4
b) 6
c) 8
d) 10
The law of conservation of matter says
a) Matter is made of chemicals.
b) Matter cannot leave Earth.
c) Matter cannot be created or be destroyed.
d) Matter is made of molecules and atoms.
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