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Gr.7 Final Revision Term 2

Total questions: 64

Worksheet time: 1hrs 28mins

Name
Class
Date
1.
When the car moves AWAY from you, its horn seems...
a)
Low pitched
b)
High pitched
c)
Normal
2.

When an ambulance moves TOWARD you it sounds ________ pitched. 

a)

high

b)

low

c)

medium

3.
If you want to change the pitch of a sound, you have to change the ___
a)
frequency
b)
amplitude
c)
speed
d)
volume
4.
When a sound is louder what measurement gets bigger?
a)
Frequency 
b)
Amplitude 
c)
Wavelength 
d)
Crest
5.

Identify which end of the electromagnetic spectrum has the Longest Wavelength and Shortest Wavelength.

a)

Longest- Gamma; Shortest- Radio

b)

Shortest - Microwaves; Longest - Ultraviolet

c)

Shortest - Gamma; Longest - Radio

6.

X-rays carry relatively high amounts of energy, which allows them to penetrate through your skin. Which of the following types of electromagnetic radiation also penetrate your skin?

a)

radio waves

b)

gamma

c)

visible light

7.
Which of the following is the bending of a wave, which changes its speed.
a)
Reflection
b)
Diffraction
c)
Refraction
d)
Frequency
8.
A leaf is green, what does this tell you about the light that is being absorbed?
a)
no light is being absorbed
b)
green is being refracted and all the colors are being absorbed.
c)
green is being absorbed and all the other colors are reflected
d)
green is being reflected and all the other colors are being absorbed
9.

What type of interference is represented in this diagram?

a)

Constructive

b)

Destructive

10.

Which lens represents the path light takes through a concave lens?

a)
b)
c)
d)
11.

Would the bridge have broken if the wind's frequency was different than the bridge's natural frequency?

a)

No, the vibrations amplitude would continue increasing.

b)

Yes the vibrations amplitude would continue increasing

c)

No, the vibrations amplitude would decrease saving the bridge

d)

Yes, the vibrations amplitude would decrease saving the bridge

12.

It is the change in wave frequency caused by a moving wave source.

a)

Pitch

b)

Intensity

c)

Timbre

d)

Doppler effect

13.

Definition: When one object vibrating at the same natural frequency of a second object forces that second object into vibrational motion.

a)

Reflection

b)

Refraction

c)

Diffraction

d)

Resonance

14.

Packet of light energy

a)

Photon

b)

Photoelectric Effect

c)

Microwaves

d)

Polarized Light

15.

Polarized light is...

a)

the light that passes through a polarizing filter

b)

the light that is stopped by the polarizing filter

c)

the many different directions in which light travels

16.

How would a tomato look under blue light?

a)

The tomato would seem to disappear

b)

The tomato would still appear red

c)

The tomato would appear black

d)

The tomato would appear white

17.

If a sound wavelength gets smaller what do you hear?

a)

A louder sound

b)

A quieter sound

c)

A higher pitch sound

d)

A lower pitch sound

18.

If a sound Amplitude gets smaller what do you hear?

a)

A louder sound

b)

A quieter sound

c)

A higher pitch sound

d)

A lower pitch sound

19.
The stationary dot is called:
a)
a node.
b)
an anti-node.
c)
the amplitude.
d)
the not moving bit.
20.
The moving black dot is called:
a)
a node
b)
an anti-node
c)
an anti-amplitude
d)
the wangy bit
21.
When two waves combine to form a new wave with a smaller amplitude, it is called 
a)
Refraction
b)
Constructive Interference
c)
Resonance
d)
Destructive Interference
22.

What is resonance?

(a)  

23.

What is natural frequency?

a)

The frequency at which a system normally vibrates without outside influence.

b)

The frequence at which a system vibrates with the addition of outstide influence.

c)

The distance between consecutive corresponding points of the same phase on the wave.

d)

The number of times it goes through a cycle in one second.

24.

A pattern of vibration that looks like a wave that is standing still is called

     

   

     

     

a)

a) Standing wave

b)

   b) Constructive interference

c)

c) Ultrasound

d)

d) Resonance

25.

How is loudness measured?

a)

decibels

b)

HZ

c)

joules

26.

___________ are factors affecting how fast or slow sound waves travel through different media.

a)

Temperature

b)

stiffness & compressibility

c)

Frequency

d)

density

e)

wave length

27.
a mirror with a surface that curves inward like the inside of a bowl
a)
concave mirror
b)
convex mirror
c)
plane mirror
d)
flat mirror
28.
Which one is a convex lens?
a)
A
b)
B
29.

Which of the following waves on the EM spectrum have the greatest amount of energy?

a)

infrared waves

b)

ultraviolet waves

c)

microwaves

d)

visible light

30.

light shines on metal and knocks some electrons off the metal

a)

Amplitude

b)

Frequency

c)

Photoelectric Effect

d)

Rarefactions

31.
Convex Mirrors produce...
a)
only virtual images
b)
virtual or real images
c)
only real images
d)
inverted images
32.

The image formed by a concave mirror will ______________.

a)

always be real

b)

always be virtual

c)

be either real or virtual

d)

will always be magnified

33.

_____ lenses refract light rays toward the optical axis. When this lens is held close to your eye, the image is magnified, virtual, and upright.

a)

Concave

b)

Convex

c)

Prismatic

d)

Refractive

34.

The following is a picture of what type of mirror?

a)

Convex Mirror

b)

Concave Mirror

c)

Plane Mirror

d)

Flat Mirror

35.

The following is a picture of what type of mirror?

a)

Convex mirror

b)

Concave mirror

c)

Plane Mirror

d)

Flat Mirror

36.
This is an example of a __________ mirror.
a)
Concave
b)
Convex
c)
Plane
d)
Magnifying
37.
The point where the rays meet is known as....
a)
Fire
b)
the focal point
c)
refraction
d)
Plane of the lens
38.

A person standing in front of a lens creates an image that is both smaller than the original and closer to the lens. Classify the image formed in this scenario.

a)

real, inverted

b)

real, upright

c)

virtual, inverted

d)

virtual, upright

39.

Classify the image formed in this scenario.

a)

real, inverted, larger than original

b)

real, inverted, smaller than original

c)

virtual, upright, larger than original

d)

virtual, upright, smaller than original

40.

Classify the image formed in the magnifying glass.

a)

real

b)

virtual

c)

larger than original

d)

smaller than original

41.

Classify the image formed in the droplet. Check two.

a)

real

b)

virtual

c)

inverted

d)

upright

42.

The bowl of a shiny spoon forms an enlarged, upright image similar to that of a ____ mirror.

a)

wide-angle

b)

convex

c)

concave

d)

refracting

43.
Concave lenses, like the ones found in the peepholes of a door, always produce images that are .....
a)
Virtual, upright, smaller
b)
Real, inverted, larger
c)
Real, inverted, smaller
d)
Virtual, upright, larger
44.
Convex mirrors, like those found on the side of a car, produce images that are always _________________. 
a)
Real, larger and inverted
b)
Virtual, larger, and inverted
c)
Virtual, smaller and upright
d)
Of equal size and position as the original object
45.
Law of reflection state that - The angle of incidence is .................. to the angle of reflection.
a)
equal
b)
double
c)
half
46.

What does the amplitude of a sound wave depend on?

a)

loudness

b)

frequency

c)

wavelength

d)

pitch

47.

In which of the following substances does a beam of light travel the fastest?

a)

air

b)

glass

c)

plastic

d)

water

48.

Why does an orange look orange?

a)

It absorbs orange light and reflects other colors.

b)

It reflects red and yellow light, only.

c)

It reflects orange light and absorbs other colors.

d)

It absorbs red and yellow light, only.

49.
What kind of mirror is shown here?
a)
plane
b)
concave
c)
convex
d)
diffuse
50.
When the surface of a mirror curves inward, like the inside of a bowl, it is called a _____. a
a)
plane mirror 
b)
convex mirror
c)
concave mirror
d)
diffuse mirror
51.
An incident ray that is parallel to the principal axis...
a)
will reflect parallel to the principal axis
b)
will refract through the focal point
c)
will reflect through the center of curvature
d)
will continue along the same path through the lens
52.
An image that you can see , but does not really exist is called which of the following?
a)
Real Image
b)
Fake Image
c)
Virtual Image
d)
Digital Image
53.
This image is...
a)
Inverted and smaller
b)
Inverted and larger
c)
not inverted and smaller
d)
not inverted and larger
54.
This image is.....
a)
inverted and smaller
b)
inverted and larger
c)
not inverted and smaller
d)
not inverted and larger
55.
This is an example of a _____________ mirror
a)
Concave
b)
Convex
c)
Plane
d)
Magnifying
56.
This is an example of a __________ mirror.
a)
Concave
b)
Convex
c)
Plane
d)
Magnifying
57.
What is B?
a)
crest
b)
trough
c)
compression
d)
rarefaction
58.
What is changed in the second picture?
a)
Someone is talking louder in picture 2
b)
Someone is talking softer in picture 2
c)
Someone is talking lower pitch in picture 2
d)
Someone is talking higher pitch in picture 2
59.

Mechanical Waves

a)

consist of Transverse, Surface and Electromagnetic.

b)

do not require a medium to pass through.

c)

require a medium to pass through.

60.

Sound Waves

a)

are Longitudinal waves.

b)

are Surface Waves.

c)

are Transverse Waves

d)

move in a circular motion.

61.
 A wave has frequency of 5 Hz and a speed of 25 m/s. What is the wavelength of the wave?
a)
25 m
b)
125 m
c)
5 m
d)
25 m/s
62.

A guitar string vibrates with a frequency of 320 hz. If the wavelength of the vibration is 0.23 meters what is the speed of the wave?

a)

320.23 m/s

b)

1391.3 hz

c)

73.6 m/hz

d)

73.6 m/s

63.
 A wave has frequency of 5 Hz and a speed of 25 m/s. What is the wavelength of the wave?
a)
25 m
b)
125 m
c)
5 m
d)
25 m/s
64.
 A wave has frequency of 50 Hz and a wavelength of 10 m. What is the speed of the wave?
a)
500 m/s
b)
50 m/s
c)
5 m/s
d)
0.5 m/s

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