Focus On Life Science: California Grade 7

Lesson 3: Using Lenses

Standards Check

1.
Light rays through a convex lens bend so they _______ . 6.d
A)come together
B)spread apart
C)are parallel
D)reflect light
2.
The point where light rays converge is the _____. 6.d
A)path
B)focal length
C)focal point
D)optical axis
3.
To observe a planet in the night sky, it is best to use a ________. 6.d
A)camera
B)refracting telescope
C)microscope
D)reflecting telescope
4.
How many lenses are used in a light microscope? 6.d
A)0
B)1
C)2
D)3
Grade 7
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