To focus on nearby objects, the eye muscles must (relax/contract)
contract
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15
Which of the following is NOT needed in a circuit? A. a closed loop B. a switch C. conductor D. energy source
B. A switch
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monster
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fairy
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shark
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thief
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15
When light travels through a less dense to more dense medium, the ray ...
refracts towards the normal
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15
If the bulb marked X burns out A. the other two bulbs become brighter B. none of the bulbs light C. the other two bulbs become dimmer D. the other two bulbs remain the same
d
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15
The voltage in a parallel circuit is the (same/different) everywhere in the circuit
same
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15
What does this symbol represent?
cell
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thief
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fairy
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shark
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thief
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15
The reflected image in a concave mirror is closer or further than the actual object?
closer
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15
The angle of incidence is _________ to the angle of reflection
the same/equal
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15
myopia (nearsightedness) is when the eyeball is too (short/long) and the image falls (in front of/behind) the retina
long, in front of
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15
Describe what the reflected image would look like.
Smaller and upside-down
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lifesaver
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gold
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gift
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lifesaver
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thief
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rocket
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gift
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thief
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15
Which electrode combination would result in a higher voltage? a. zinc and zinc b. zinc and copper
