Worksheets20.5.21 GR-3 FRICTION & CIRCUITS
Total questions: 20
Worksheet time: 14mins
1. A PATH along which electricity can flow is a ___________________?
a) light bulb
b) switch
c) insulator
d) circuit
2. What is a circuit?
a) an outlet or switch
b) a path which an electric current flows
c) insulator
d) conductor
3. What are the two ends of a battery called?
a) south and north
b) positive and negative
c) on and off
d) black and white
4. Which is NOT a good conductor?
a) silver
b) copper
c) iron
d) plastic
5. A unit used to measure the electric potential of a battery is called..
a) Ohms
b) Omega
c) Volts
d) Amps
6. what is this symbol for?
a) light bulb
b) switch
c) battery
d) resistor
7. This circuit is .....?
a) open
b) parallel
c) closed
d) series
8. When all parts of the circuit are connected it is a ______ circuit.
a) open
b) closed
c) wireless circuit
d) none of these
9. If you replace the paper clip with a plastic spoon, what is the plastic spoon acting as?
a) A conductor
b) A battery
c) An insulator
d) A switch
10. What is a common energy source for a circuit?
a) Light bulb
b) Battery
c) Wire
d) Switch
11. This rubber ducky would block the flow of electricity, because:
a) it is a conductor
b) it is an insulator
c) it is yellow
d) it completes the circuit
12. A steel nail would allow electricity to flow through it because steel is a great conductor of electricity.
a) True
b) False
13. Which of these forces act on parachutes?
a) Air Resistance & Gravity
b) Gravity & water resistance
c) Thrust & water resistance
d) none of these
14. What causes an object to fall faster?
a) Smaller surface area
b) Larger surface area
c) If it has a parachute
d) If it is softer
15. The larger the surface area of the moving object, the ___________ air resistance there is.
a) Less
b) More
c) Longer
d) Quicker
16. What is water resistance ?
a) friction between moving object in water
b) gravity in water
c) pulling force
d) friction between moving object in air
17. Which of the given shapes will touch to the bottom first ??
18. The level of water resistance -------------------------- if your body is completely submerged (to be under) in the water.
a) increases
b) decreases
c) increases and decreases
d) none of these
19. When you are walking through a swimming pool, which way is water resistance acting?
a) against your direction
b) same direction as yours
c) It speeds up motion
d) None of these.
20. Which type of friction force allows a better speed of movement?
a) Air resistance
b) water resistance
c) gravity
d) upthrust
