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year 8 Science Homework Week 3
By Naomi Arthur
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Last updated over 4 years ago
13 questions
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Question 1
1.
Which example of a wave does not need matter to be able to travel?
Sound waves
Light waves
water waves
Question 2
2.
Can light pass through opaque objects?
yes
no
maybe
Question 3
3.
Which detector would we use for light waves?
Eyes
ears
Microphone
camera
Question 4
4.
Can both light and sound waves bounce off of objects?
yes
no
maybe
Question 5
5.
The unit for wavespeed is
m/s
m
Hz
mm
Question 6
6.
The unit for frequency is
m/s
m
Hz
mm
Question 7
7.
Convert 5kHz into Hz
500 Hz
5000 Hz
0.005 Hz
0.05 Hz
Question 8
8.
Convert 200cm into m
2 m
20 m
0.02 m
0.002 m
Question 9
9.
What is the equation linking wave speed, frequency and wavelength?
Wave speed = frequency x wavelength
Wave speed = Frequency / wavelength
wavelength = frequency X wave speed
Question 10
10.
When light is reflected from smooth surfaces, this is called…
reflection
Dispersed reflection
Specular reflection
Refraction
Rarefaction
Question 11
11.
The light ray that hits an object is called the….
Incident ray
Reflected ray
Speculated ray
Refracted ray
Question 12
12.
The light ray travels away from an object is called the….
Incident ray
Incident ray
Speculated ray
Refracted ray
Question 13
13.
The angle of incidence and angle of reflection are always…
The same
Even numbers
Odd numbers
Square numbers