AnswersBMS_Favors_Grade 8 Physical Science_Sem B_25-26Unit Test

Unit Test — Unit test Answers

25 verified answers3 views
21
Free Preview

Aansi wants energy on a sound wave to be carried more quickly through a metal medium. Which could she do?

A
decrease the temperature
B
increase the temperature
C
use a gas medium instead
D
use a liquid medium instead
22
Free Preview

What is the speed of a wave with a frequency of 2 Hz and a wavelength of 87 m?

A
0.023 m/s
B
43.5 m/s
C
89 m/s
D
174 m/s
23

Augie created this chart about the two kinds of waves.Which best labels the chart?

Question illustration
A
Title 1 is “Longitudinal Waves,” and Title 2 is “Transverse Waves.”
B
Title 1 is “Transverse Waves,” and Title 2 is “Longitudinal Waves.”
C
Title 1 is “Electromagnetic Waves,” and Title 2 is “Mechanical Waves.”
D
Title 1 is “Mechanical Waves,” and Title 2 is “Electromagnetic Waves.”
24

Jenny is trying to describe a wave. Which example would be the best description?

A
a toy car hitting a wall and bouncing back
B
a toy car rear-ending a toy car that then rear-ends another toy car
C
two toy cars driving parallel to each other at the same speed
D
two toy cars driving away from each other at the same speed
25

Which refers to any disturbance that carries energy from one place to another through matter and space?

A
frequency
B
wave
C
hertz
D
pitch

Did you find these answers helpful?

More from this Course

Quiz
25 verified answers

Unit Test