WorksheetsScience 21 Q1
Total questions: 41
Worksheet time: 28mins
Name
Class
Date
1.
The unit to measure the resistivity of a wire is
a)
ohms
b)
Volt
c)
ohms.m
d)
ohms.s
2.
Materials that have a high electrical resistance
a)
less length
b)
less tempareture
c)
more thickness
d)
less cross sectional area
3.
The conductor with higher temperature
a)
high resistance
b)
low resistance
c)
same resistance
d)
it does not affect the resistance
4.
The flow of electricity in a circuit-
a)
current
b)
flow
c)
circuit
5.
____________ allows electricity to flow.
a)
A conductor
b)
An insulator
c)
A magnet
6.
When the switch is closed, the light
a)
comes on
b)
stays off
c)
burns out
7.
If the lights are off, the circuit is
a)
closed
b)
open
8.
The flow of electricity requires a
a)
complete path
b)
incomplete path
c)
insulated current
9.
Which of the following is NOT a conductor?
a)
Wood
b)
Wire
c)
Metal
d)
Water
10.
An example of a conductor is :
a)
a glass paperweight
b)
a plastic cap
c)
a metal screw
d)
a wooden handle
11.
Voltage is measured in __.
a)
volts.
b)
watts.
c)
coulombs.
12.
Resistance is measured in ___.
a)
watts.
b)
amps.
c)
ohms.
13.
the tendency for a material to oppose the flow of electrons
a)
current
b)
circuit
c)
resistance
d)
difference
14.
Unit for resistance
a)
Ampere
b)
Ohm
c)
Volt
d)
Watt
15.
What is the unit of energy?
a)
Amps
b)
Watts
c)
Volts
d)
Joules
16.
As the resistance of a circuit increases, the current will
a)
increase
b)
decrease
c)
stay the same
17.
The difference in electrical potential energy between two places is called
a)
resistance
b)
friction
c)
induction
d)
voltage
18.
If the current through a circuit is 2 A and the resistance of a light bulb in the circuit is 10 Ohms, what is the voltage difference across the light bulb?
a)
5 V
b)
12 V
c)
0.2 V
d)
20 V
19.
What is the formula for resistance?
a)
V x I = R
b)
R = V/I
20.
This is an example of a _______ circuit
a)
open
b)
series
c)
parallel
d)
square
21.
The mathematical relationship between Voltage, Current, and Resistance:
a)
Faraday's Law
b)
Tesla's Law
c)
Edison's Law
d)
Ohm's Law
22.
Which device measures the current in a circuit?
a)
ammeter
b)
amplifier
c)
voltmeter
d)
rheostat
23.
Potential difference is measured in:
a)
ohms
b)
ampere
c)
watts
d)
volts
24.
Hot objects begin to cool as-
a)
cooler air is transferred to the hot object.
b)
thermal energy in the object is transferred to the surrounding air.
c)
atoms in the object react with the oxygen in the air.
d)
thermal energy in the object cancels out energy in the air
25.
Which example below is an example of convection?
a)
Standing on a hot metal bridge
b)
The attic is warmer than the basement
c)
The Sun heating the Earth
d)
Touching hot sand with your feet
26.
Which example below is an example of radiation?
a)
Standing on a hot metal bridge
b)
The attic is warmer than the basement
c)
The Sun heating the Earth
d)
Touching hot sand with your feet
27.
What type of material makes the best insulators?
a)
Aluminum
b)
Copper
c)
Styrofoam
d)
Metal
28.
What type of material makes the best conductor?
a)
Food
b)
Wood
c)
Styrofoam
d)
Metal
29.
Do renewable energy sources run out?
a)
Yes
b)
No
30.
What is a renewable resource?
a)
A resource you can reuse
b)
An object you cannot replace
c)
Fossil fuels
d)
polluted resources
31.
What is a non-renewable resource?
a)
Solar energy
b)
A resource that cannot be reused/ recycled
c)
Wind energy
d)
Biomass
32.
Where does most of earth`s energy come from?
a)
The sun
b)
Mars
c)
Wind
d)
Water
33.
What is a non-renewable resource?
a)
water
b)
wind
c)
coal
d)
biomass
34.
Non-Renewable resources are also known as what?
a)
Fossil Fuels
b)
Renewable
c)
Scarce fuels
d)
Hydroelectric Energy
35.
What is a fossil fuel?
a)
oil
b)
biomass
c)
wind
d)
water
36.
Fossil fuels are renewable resources. True or False?
a)
True
b)
False
37.
Which renewable resource gets its direct energy from the sun?
a)
Geothermal
b)
Solar
c)
Wind
d)
Hydrogen
38.
Why do we use non-renewable resources instead of renewable resources?
a)
They are less expensive
b)
They provide more energy than renewable sources.
c)
They support our current consumer economy.
d)
All of the above.
39.
What is Deforestation?
a)
A forest in which there are too many trees/
b)
A forest party where deers hang out
c)
The addition of trees to a forest.
d)
The clearing or destruction of trees; transforming of a forest into flat land.
40.
It is important to conserve nonrenewable resources because....
a)
These resources may be used up in the future
b)
They are easier to find
c)
They come from the remains of plants or animals
41.
What is conservation?
a)
Use something again and again
b)
Protect and use carefully
c)
Turn it into something else
d)
Use less of and item
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