science 8 chapter 2 unit test Flashcards
1
Q
Cameras are used
A
To take a visual record of something
2
Q
Lasers are
A
Intense beams of focused lifhty
3
Q
Fiber optics are glass tubes wich
A
Carry light signals
4
Q
A microscope uses
A
Two convex lens
5
Q
A refracting telescope uses
A
Two objective lens
6
Q
The reflecting telescope uses
A
One concave mirror one plane mirror and one convex lens
7
Q
The retina is where
A
The image is formed
8
Q
The cornea
A
Protects the eye
9
Q
The iris
A
Controls the amount of light entering the eye
10
Q
The sclera
A
Holds the eye together
11
Q
The cc’d
A
Changes light toe electricity
12
Q
Light passes through the
A
Cornea getting mostly focused
13
Q
A concave lens diverges light no foclal point
A
14
Q
AA convex lens has
A
A focal point
15
Q
Light passing into a new medium will
A
Refract
