Online Test Practice Light - St. Ambrose School
4/29/2016
Online Test Practice
Online Test Practice
Light
1. A blue object looks blue because __________. Need a Hint?
A.
the blue object is opaque
B.
the blue object emits blue light
C.
blue light is absorbed while others are reflected
D.
blue light is reflected while others are absorbed
2. Why can you see most objects? Need a Hint?
A.
light refracts through them
B.
light reflects off them
C.
they emit light
D.
they absorb light
3. A source of light emits light rays __________. Need a Hint?
A.
only at right angles
B.
in a circle
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4/29/2016
Online Test Practice
C.
in all directions
D.
in a straight line
4. Objects that allow only some light to pass through them are considered __________. Need a Hint?
A.
transparent
B.
translucent
C.
opaque
D.
solid
5. Which of the following is the law of reflection? Need a Hint?
A.
The angle of incidence is equal to the angle of reflection.
B.
The angle of incidence is equal to the normal.
C.
The angle of reflection is equal to the normal.
D.
The normal is perpendicular to the reflecting surface.
6. Object A reflects more than object B. Therefore, object A is __________ object B. Need a Hint? http://connected.mcgrawhill.com/media/repository/protected_content/COMPOUND/50000024/38/43/375_test/375_test.html?mghCourseID=6Y7SE2PRKJCMZ… 2/6
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A.
rougher than
B.
just as smooth as
C.
smoother than
D.
made of the same material as
7. What is a focal length? Need a Hint?
A.
the difference between the angle of incidence and the angle of reflection
B.
the distance from the center of the mirror to the focal point
C.
the distance from the mirror to the reflecting object
D.
the distance light travels along a reflective surface
8. What occurs to light waves in a convex mirror? Need a Hint?
A.
they are absorbed
B.
they reflect at right
C.
they converge
D.
they diverge
9. Which is an example of a convex lens? Need a Hint?
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A.
a car windshield
B.
a magnifying glass
C.
a side mirror on a car
D.
nearsighted eyeglasses
10. In which of the following materials will light travel fastest? Need a Hint?
A.
vacuum
B.
air
C.
water
D.
glass
11. What causes light waves to refract? Need a Hint?
A.
The speed of light is reduced to zero.
B.
The speed of light remains constant.
C.
The speed of light changes from one medium to the next.
D.
The light is repelled by some materials.
12. The shape of the _______ changes when you focus on nearby and distant objects. Need a Hint?
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Online Test Practice
A.
optic nerve
B.
cornea
C.
retina
D.
lens
13. A(n) __________ is an image of a threedimensional object produced without using a lens. Need a Hint?
A.
digital photograph
B.
optical fiber
C.
hologram
D.
light pipe
14. What type of lenses do microscopes use? Need a Hint?
A.
concave
B.
convex
C.
plane
D.
reflecting
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Online Test Practice
15. What is special about zoom lenses? Need a Hint?
A.
They allow you to change the focal length.
B.
They have a short focal length.
C.
They have a long focal length
D.
They have no focal length.
This is the end of the test. When you have completed all the questions and reviewed your answers, press the button below to grade the test. Grade the Test
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Online Test Practice
Online Test Practice
Light
1. A blue object looks blue because __________. Need a Hint?
A.
the blue object is opaque
B.
the blue object emits blue light
C.
blue light is absorbed while others are reflected
D.
blue light is reflected while others are absorbed
2. Why can you see most objects? Need a Hint?
A.
light refracts through them
B.
light reflects off them
C.
they emit light
D.
they absorb light
3. A source of light emits light rays __________. Need a Hint?
A.
only at right angles
B.
in a circle
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Online Test Practice
C.
in all directions
D.
in a straight line
4. Objects that allow only some light to pass through them are considered __________. Need a Hint?
A.
transparent
B.
translucent
C.
opaque
D.
solid
5. Which of the following is the law of reflection? Need a Hint?
A.
The angle of incidence is equal to the angle of reflection.
B.
The angle of incidence is equal to the normal.
C.
The angle of reflection is equal to the normal.
D.
The normal is perpendicular to the reflecting surface.
6. Object A reflects more than object B. Therefore, object A is __________ object B. Need a Hint? http://connected.mcgrawhill.com/media/repository/protected_content/COMPOUND/50000024/38/43/375_test/375_test.html?mghCourseID=6Y7SE2PRKJCMZ… 2/6
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Online Test Practice
A.
rougher than
B.
just as smooth as
C.
smoother than
D.
made of the same material as
7. What is a focal length? Need a Hint?
A.
the difference between the angle of incidence and the angle of reflection
B.
the distance from the center of the mirror to the focal point
C.
the distance from the mirror to the reflecting object
D.
the distance light travels along a reflective surface
8. What occurs to light waves in a convex mirror? Need a Hint?
A.
they are absorbed
B.
they reflect at right
C.
they converge
D.
they diverge
9. Which is an example of a convex lens? Need a Hint?
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Online Test Practice
A.
a car windshield
B.
a magnifying glass
C.
a side mirror on a car
D.
nearsighted eyeglasses
10. In which of the following materials will light travel fastest? Need a Hint?
A.
vacuum
B.
air
C.
water
D.
glass
11. What causes light waves to refract? Need a Hint?
A.
The speed of light is reduced to zero.
B.
The speed of light remains constant.
C.
The speed of light changes from one medium to the next.
D.
The light is repelled by some materials.
12. The shape of the _______ changes when you focus on nearby and distant objects. Need a Hint?
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4/29/2016
Online Test Practice
A.
optic nerve
B.
cornea
C.
retina
D.
lens
13. A(n) __________ is an image of a threedimensional object produced without using a lens. Need a Hint?
A.
digital photograph
B.
optical fiber
C.
hologram
D.
light pipe
14. What type of lenses do microscopes use? Need a Hint?
A.
concave
B.
convex
C.
plane
D.
reflecting
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Online Test Practice
15. What is special about zoom lenses? Need a Hint?
A.
They allow you to change the focal length.
B.
They have a short focal length.
C.
They have a long focal length
D.
They have no focal length.
This is the end of the test. When you have completed all the questions and reviewed your answers, press the button below to grade the test. Grade the Test
Please read our Terms of Use and Privacy Notice before you explore our Web site. To report a technical problem with this Web site, please contact Technical Support.
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