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Allegra Guzmán del Rio Januaruy,5,2013
#13 4.A
¿When light goes in to a new material it?
changes direction
reflectsstays in a
straight line
1
Which of the following is an artificial light source?
The sun
The moon
A bonfire
2
What do we need to make a light bulb work?
Electric current sun
water
3
What device products light by current trough a gas?
A neon sign
A prism
A flash light
4
What can you infer about the environment the anglerfish lives in?
It must extremely dark
It must extremely
bright
It must be filled with other fish
5
What could you use to split whit light into its component colors?
A flashlight
A prism
A light bulb
6
Only a minute portion of the electromagnetic spectrum can be seen whit the human eye. In this context, what does minute mean?
60 seconds
small
large
7
When you look at your teacher´s face, how can you see it?
Light reflects off of her face
Her face emanates light
Light refracts through her face
8
high
low
none
Conductors have high or low resistance?
9
watts
kg
km
Electrical power is measured by which units?
10
100°
150°200°
Which is the boiling point of water?
11
watering
Melting point
Boiling point
How do we call the temperature at which solids melts into liquids?
12
gas
liquid
solid
Ithas no rigid structure, but it has a fixed volume
13
1
2
3
How many states of matter there are?
14
liquid
matter
light
Anything that has mass and takes up space
15
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