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1. 
LIGHT ALWAYS TRAVELS IN A _________________ LINE.
2. 
LIGHT IS A _________________
3. 
LIGHT TRAVELS IN THE FORM OF _________________
4. 
ALL LIGHT WAVES ARE SIMILAR.
A.
TRUE
B.
FALSE
5. 
DIFFERENT WAVELENGTHS MAKE DIFFERENT _________________
6. 
RED COLOR HAS THE LONGEST WAVELENGTH OF ALL COLORS.
A.
TRUE
B.
FALSE
7. 
WHEN LIGHT HITS AN OBJECT, IT CAN...
A.
BE ABSORBED
B.
BE REFLECTED
C.
PLAY WITH THE OBJECT
D.
DRINK SOME WATER
E.
PASS THROUGH THE OBJECT
F.
GO HOME
8. 
THERE ARE 3 TYPES OF OBJECTS ACCORDING TO HOW THEY REACT TO LIGHT.
A.
OPAQUE
B.
RED
C.
TRANSLUCENT
D.
SHINY
E.
DULL
F.
TRANSPARENT
9. 
LIGHT PASS THROUGH TRANSPARENT OBJECTS...
A.
EASILY
B.
IN A DIFFICULT WAY
10. 
FROSTED GLASS IS A _________________ OBJECT.
11. 
A STONE IS AN _________________ MATERIAL.
12. 
REFLECTED LIGHT DEPENDS ON THE _________________ OF THE OBJECTS.
13. 
SHINY SURFACES WILL REFLECT...
A.
A LOT OF LIGHT
B.
A LITTLE LIGHT
14. 
DULL SURFACES WILL REFLECT...
A.
A LOT OF LITTLE
B.
A LITTLE LIGHT
15. 
SMOOTH AND FLAT SURFACES WILL BOUNCE OFF LIGHT...
A.
AT EQUAL ANGLES
B.
AT DIFFERENT ANGLES
16. 
ROUGH SURFACES WILL BOUNCE OFF LIGHT...
A.
AT EQUAL ANGLES
B.
AT DIFFERENT ANGLES
17. 
THE SPEED OF LIGHT IS ALWAYS THE SAME.
A.
TRUE
B.
FALSE
18. 
LIGHT IS FASTER OR SLOWER DEPENDING ON THE SUBSTANCE IT IS PASSING THROUGH.
A.
TRUE
B.
FALSE
19. 
WHEN LIGHT PASSES FROM ONE SUBSTANCE TO ANOTHER, ITS SPEED CHANGES.
A.
TRUE
B.
FALSE
20. 
WHEN THE LIGHT CHANGES ITS SPEED, ITS _________________ ALSO CHANGES.
21. 
BASICALLY, WE USE REFLECTION IN...
22. 
WE USE REFRACTION IN...
A.
CAMERAS
B.
PAPERS
C.
COMPUTER GAMES
D.
MICROSCOPES
E.
TELESCOPES
23. 
LIGHT CAN BE TRANSFORMED INTO THERMAL ENERGY.
A.
TRUE
B.
FALSE
24. 
THE SUNLIGHT THAT HITS THE EARTH IS TRANSFORMED INTO HEAT.
A.
TRUE
B.
FALSE
25. 
SOME OF THE HEAT RADIATED BY THE EARTH IS TRAPPED BY THE GREENHOUSE GASES AND IT IS RADIATED BACK TO THE EARTH.
A.
TRUE
B.
FALSE
26. 
THE GREENHOUSE EFFECT IS A NATURAL EFFECT. THE EARTH NEEDS IT.
A.
TRUE
B.
FALSE
27. 
WE COULD LIVE WITHOUTH THE GREENHOUSE EFFECT.
A.
TRUE
B.
FALSE
28. 
THE GREENHOUSE GASES THAT ARE NATURALLY IN THE ATMOSPHERE ARE...
A.
WATER VAPOR
B.
OZONE
C.
NITROGEN
D.
HIDROGEN
E.
CARBON DIOXIDE
F.
METHANE
29. 
CHOOSE THE HUMAN ACTIONS THAT ARE CREATING GREENHOUSE GASES.
A.
EATING
B.
USING COMPUTERS
C.
FARMING
D.
BURNING FOSSIL FUELS
E.
WRITING EMAILS
F.
DEFORESTATION
30. 
THE MORE GREENHOUSE GASES IN THE ATMOSPHERE, THE MORE _________ WILL STAY IN THE EARTH.
31. 
THE RISE IN THE LEVEL OF THE GREENHOUSE GASES IS MAKING THE TEMPERATURE OF THE EARTH...
A.
TO GO DOWN
B.
TO GO UP
32. 
IF WE CONTINUE PRODUCING MORE AND MORE GREENHOUSE GASES, THERE WOULD BE...
A.
LESS DROUGHTS AND FLOODS
B.
LESS ICE AND SNOW
C.
MORE HEALTH RISK
D.
MORE DROUGHTS AND FLOODS
E.
LESS WEATHER INCIDENTS
F.
AN INCREASE OF THE OCEANS LEVEL