AL SANAWBAR SCHOOL
Date __/__/__
Grade 8 Science: Worksheet for final exam
STANDARDS:
MS-PSR-1: Use mathematical representations to describe a simple model for waves that
includes how the amplitude of wave is related to the energy in a wave
MS-PSR-2: Develop and use a model to describe that waves are reflected, absorbed or
transmitted through various materials.
1. Label the diagram below
A____crest___________
B_____Amplitude__________
C_____Trough__________
D_____resting point__________
E_______wavelength________
2. In the figure below "A" represents
A____Compression ___________
3. Radio wave
a. Has longest wavelength
b. Has the highest frequency
c. Is a wave used to see bone fractures
4. The number of waves per given time is referred to as _____________
a. Frequency
b. Wavelength
c. Speed
d. Amplitude
5. Which statement explains why sound cannot travel across the space
between two planets?
a. The distances between planets are too great
b. The temperatures in space are too cold
c. Sound waves need a medium to move
6. Amplifier is a device used to
a. Increase loudness
b. Make sound softer
c. Protect ears
d. Increase pitch
7. The human wave , that the audience do in a football game, is not
considered as a real wave because
.
a.
b.
c.
d.
It does not transfer energy
It transmits matter
It cannot travel in space
It does not transfer matter
8. The Tin can phone below works because :
a. The energy of the sound
wave is absorbed by the
string
b. The energy of the sound
wave is reflected by the
string
c. The energy of the sound is
transmitted by the string
d. The energy is not related to
sound wave
9. Abdulla plays the scale of his clarinet. As he plays from low notes to high
notes, what happens to the sound wave that the clarinet creates?
a. The amplitude of the sound wave decrease
b. The frequency of the sound wave increase
c. The wavelength of the sound increase
d. The number of the wave increase
10.If a wave has a frequency of 50Hz and a wavelength of 10m , what would
be the speed of the wave?
a.
b.
c.
d.
500 m/s
5 m/s
500 N
0.5m/s
11.Two sound waves of different frequencies interfere and produce a
resulting waveform shown with four points (W, X, Y, and Z) marked on
the new wave. At which point will the sound be the loudest ?
a.
b.
c.
d.
W
X
Y
Z
12.Which of the following electromagnetic wave has the highest frequency?
.
a.
b.
c.
d.
Radio wave
Microwave
Visible light
Gamma rays
13.A wave with a large wavelength will have a ______ frequency and _____
energy
a.
b.
c.
d.
High, Low
High , High
Low ,high
Low, Low
14.Sound waves travel the fastest through --a. Solid
b. Liquid
c. Air
15.Label the parts below (a, b, c, d and e)
16.The picture below describes *
a.
b.
c.
d.
Absorption
Reflection
Transmission
Refraction
17.The picture below best describes *
a.
b.
c.
d.
Regular reflection
Diffused reflection
Regular refraction
Smooth surface reflection
18.Black objects
a. Reflects all light colors
b. Absorbs all light colors
c. Reflects all the colors except the black
d. Accept all the light colors except white
19.We see an apple as being red because
a. All of the colors are absorbed
except for the color red. Red is
being reflected in to our eyes
b. All of the colors are being reflected
except for the color red. Red is
being absorbed.
c. All the colors are refracted by the
red color of the apple
d. None of the above
20.Water, air, and glass are all good examples of
a. Mark only one oval.
b. Opaque type of matter
c. Transparent type of matter
d. Translucent type of matte
21.In relation to the diagram below, what are the possible ways that light
interacts with matter
a.
b.
c.
d.
Reflection
Transmission
Absorption
All are correct
22.Which of the following is true about plane mirrors?
a. Plane mirrors always form upright images
b. Plane mirror form magnified image
c. Plane mirrors form diminished image
d. Plane mirror form both upright and
upside-down images
23.Which of the following is true about convex lens?
a. It is curved outward
b. It forms both real and inverted image
c. Thicker at the center
d. All are correct answers
24.The image below represent
a.
b.
c.
d.
Concave mirror
Plane Mirror
Convex mirror
Convex lens
25.A student placed a spoon in a cup of water. The spoon appears broken
because light
a.
b.
c.
d.
always travels in a straight line
bends when it passes through water
reflects the pencil on the water's surface
makes the water in the glass evaporate
26.The image below is formed by _______ type of lens. *
a. Concave
b. Convex
c. Plane
27.Rainbows are formed due to *
a. Refraction
b. Reflection
c. Interference of light
d. Diffraction
28.Which of the following choice shows the correct path of light in the
drawing below?
.
a.
b.
c.
d.
Air--- water----glass
Air-----glass----water
Air----glass---air
Water----glass---air
29.Where is the fish located and why? Choose the correct answer. *
a.
b.
c.
d.
position A because light refracts as it exits the water
position B because light refracts as it exits the water
position A because the light is transmitted straight through the
Position A because light travel in straight line when it moves from
water to air
30.The refraction of light in the prism below is based on *
a.
b.
c.
d.
Wavelength
Amplitude
Volume
Energy
31.What color has the shortest wavelength, or the highest frequency? *
a. Red
b. Violet
c. Green
d. Blue
32.When a Red laser shines on a red gummy bears *
a. it will be reflected
b. It will be absorbed
c. It will be transmitted through
33.Write at least three major differences between concave and convex
lenses
34.Choose the right color type to the letters that corresponds in the
drawing below
Blue
magenta
green
cyan
I_____
F_____
G_____
35.Which of the following is an example of primary light color?
a. Red
b. Cyan
c. Magenta
d. Yellow
36.Black pigment is formed from a mixing of *
a. Red, Green, and Blue
b. White, black, and indigo
c. Yellow, Cyan and Magenta
d. White, green and red