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Jouer Froggy Jumps
1. .............solar eclipse occurs when the earth lies in the shadow of moon
A
total
B
Partial
C
annular
2. The filament of the light bulb is made of ..........
A
carbon
B
copper
C
tungsten
3. The ………………. Eclipse causes harm to eyes.
A
lunar
B
solar
C
all of them
4. ……………………. Results from passing electric current through the human body.
A
electric shock
B
electric burn
C
electric fair
5. 1-The glass bulb of the light bulb is filled with ……………. gas.
A
argon gas
B
oxygen gas
C
helium gas
6. Cross the odd word Copper – Wood – plastic – Glass
A
Copper
B
Wood
C
Glass
7. The exerted force effort equals 200 N and the resistance value is 1000 N, if the arm of effort is 15 cm. Find the resistance arm.
A
30 cm
B
3 cm
C
300 cm
8. the function of the levers is .....
A
increas the speed
B
increas the destance
C
all of them
9. the function of The battery in electric circuit is ..........
A
source of the electricity
B
connect the parts of electric circuit
C
indecat the passage of electricity
10. The crowbar is considered from first class lever because........
A
the fulcrum is between effort and resistance.
B
the effort is between fulcrum and resistance.
C
the resistance is between effort and fulcrum.
11. Plants make their own food through ………………. Process.
A
respiration
B
photosynthesis
C
digestion
12. Umbra is the ………….
A
dark shadow area
B
lighted area
C
sunny area
13. The lever rotates around a fixed point called ……………….. .
A
resistance
B
fulcrum
C
effort
14. The mineral salts are transported from the soil to root hairs by………….. .
A
pulling force
B
osmosis
C
selective permeability
15. If the glass bulb of the electric lamp is filled with air............
A
the lamp will light
B
the lamp will grow
C
the filament will burn
16. The phenomenon that occurs when the sun, the earth and the moon are on one straight line with the earth in the middle.
A
lunar eclips
B
solar eclips
C
four seasonse
17. A structure extends from the cells of the epidermis layer of the root
A
stem
B
root hair
C
flowers
18. Materials which do not allow electricity to pass through
A
conductors
B
insulators
C
metals
19. 1-They are simple machines that always save effort.
A
first class lever
B
thired class lever
C
second class lever
20. The levers that have the fulcrum between the resistance and effort is……………..
A
second class levers
B
first class levers
C
third class levers
21. The levers that have the resistance between the fulcrum and effort is……………..
A
first class levers
B
third class levers
C
second class levers
22. The levers that have the effort between the resistance and fulcrum is……………..
A
first class levers
B
second class levers
C
third class levers
23. The opposite figure represent the ……………… lever.
A
first class levers
B
second class levers
C
third class levers
24. The effort force and resistance force are measured in………………
A
Meter
B
Newton
C
gram
25. The effort arm and resistance arm are measured in………………
A
gram
B
Meter
C
Newton
26. A gas which fill the electric lamps is.................... gas.
A
oxygen
B
argon
C
nitrogen
27. ..................... allow the electric current to transfer from the lamp base to the filament.
A
The filament
B
Argon gas
C
Copper and lead wires
28. The ................ is the distance between the resistance force and fulcrum.
A
effort arm
B
resistance
C
resistance arm
29. The ................ is the distance between the effort force and fulcrum.
A
resistance arm
B
effort arm
C
effort
30. ...................class levers always save effort.
A
first class levers
B
third class levers
C
second class levers
31. ...................class levers always do not save effort.
A
First class levers
B
third class levers
C
second class levers
32. Fluorescent lamp contains ......................
A
neon gas
B
argon
C
oxygen
33. The filament of the light bulb is made of ....................
A
tungsten
B
argon
C
iron
34. The filament of the light bulb is made of tungsten because it has........
A
low melting point
B
high burning point
C
high melting point
35. The nutcracker conserve effort because .....
A
The effort force smaller than the resistance force
B
The effort force larger than the resistance force
C
The effort force equal the resistance force
36. A rigid bar that rotates around a fixed point, and is affected by effort force and resistance force.
A
lever
B
lamp
C
electric energy
37. The tool that convert the electric energy into light energy.
A
electric lamp
B
lever
C
effort arm
38. A way in which the light bulbs are connected one after another in one route.
A
parallel connection
B
lever
C
series connection
39. A way in which the light bulbs are connected in branching routes.
A
parallel connection
B
series connection
C
lever
40. what is the function of battery in electric circuits?
A
indicate the passage of electric current
B
source of electric
C
connect the battery to the lamp
41. the electric circuits has to be ............. so The electric current passes through.
A
opened
B
closed
C
cutted
42. When the electric lamp is connected in parallel with others the light intensity …………………….
A
remains constant
B
increases
C
decreases
43. The electric lamp converts electric energy into …………………… energy .
A
light
B
heat
C
sound
44. A coiled thin wire made of tungsten in light bulbs.
A
argon
B
glass bulb
C
filament
45. Levers that sometimes conserve the effort.
A
First class levers
B
second class levers
C
third class levers