8974306
Descrição
Quiz por Lakshmi Lakshmanan, atualizado more than 1 year ago
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Criado por Lakshmi Lakshmanan
aproximadamente 7 anos atrás
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Questão 1
Questão
What is energy?
Responda
-
Measure of what an object can do
-
Measure of the matter an object has
-
Measure of the distance covered per unit time
Questão 2
Questão
Energy is measured in [blank_start]Joules.[blank_end]
Responda
-
Joules
Questão 3
Questão
Which one of the option listed below are types of energy?
Responda
-
Nuclear potential energy
-
Acidic energy
-
Kinetic energy
-
Gas energy
Questão 4
Questão
Energy can be destroyed.
Responda
- True
- False
Questão 5
Questão
Energy can be transformed from one type to another.
Responda
- True
- False
Questão 6
Questão
[blank_start]Heat[blank_end] is a way of transferring energy.
Responda
-
Heat
Questão 7
Questão
Work done is a measure of energy.
Responda
- True
- False
Questão 8
Questão
What unit does work done have?
Responda
-
Joules
-
Watts
-
Volts
-
Kilograms
Questão 9
Questão
Work done calculates how much energy is needed to move an object with a [blank_start]force[blank_end] and a distance.
Responda
-
force
-
speed
-
height
Questão 10
Questão
What is the equation for work done?
Responda
-
Work done = force*distance
-
work done=energy /time
Questão 11
Questão
The force is measured in [blank_start]newtons[blank_end] (N)
Responda
-
newtons
Questão 12
Questão
The distance is measured in centimetres.
Responda
- True
- False
Questão 13
Questão
Power calculates :
Responda
-
the rate at which energy is delivered
-
the speed of something
Questão 14
Questão
P=E/t
Responda
- True
- False
Questão 15
Questão
The unit of power is [blank_start]watt[blank_end] (W) and the [blank_start]time[blank_end] is always in seconds (s).
Responda
-
watt
-
Volt
-
Joules
-
time
-
energy
-
distilation
Questão 16
Questão
Efficiency shows the percentage of energy that is converted into:
Responda
-
useful energy
-
wasted energy
Questão 17
Questão
Efficiency = 100(Useful energy output/ total energy input)
Responda
- True
- False
Questão 18
Questão
The energy contained in foods is [blank_start]chemical[blank_end] energy.
Responda
-
chemical
Questão 19
Questão
What is a calorie?
Responda
-
unit of energy used for how much energy is in food
-
unit of speed for how fast a vehicle can travel
Questão 20
Questão
1 Kcal =4841J
Responda
- True
- False
Questão 21
Questão
What is an energy resource?
Responda
-
Where the energy comes from
-
where the source of energy comes from
Questão 22
Questão
What is a non-renewable energy resource?
Responda
-
resource that will one day run out
-
it will never run out
Questão 23
Questão
Where does energy for tidal power come from?
Responda
-
the sun
-
the moon
Questão 24
Questão
Nuclear power is when radio active material , usually uranium or thorium , is bombarded with neutrons.
Responda
- True
- False
Questão 25
Questão
What is the difference between biomass and biofuel?
Responda
-
biomass is used to produce biofuel
-
biomass is bigger than biofuel
Questão 26
Questão
What is speed?
Responda
-
it's the distance covered per unit tme
-
it's the height covered per unit time
Questão 27
Questão
s=d/t
Responda
- True
- False
Questão 28
Questão
What is the unit for speed?
Responda
-
m/s
-
mph
Questão 29
Questão
What is the unit for distance?
Responda
-
metres
-
kilometres
Questão 30
Questão
On a distance time graph, the steeper the line , the [blank_start]faster[blank_end] the object is moving.
Responda
-
faster
Questão 31
Questão
On a distance time graph, a [blank_start]straight[blank_end] line shows a constant speed.
Responda
-
straight
Questão 32
Questão
Velocity describes the [blank_start]speed[blank_end] at which something is travelling and the [blank_start]direction.[blank_end]
Responda
-
speed
-
direction
Questão 33
Questão
Acceleration = velocity / time
Responda
- True
- False
Questão 34
Questão
What is a contact force?
Responda
-
it acts directly on the object
-
it acts at a distance from an object
Questão 35
Questão
A [blank_start]free body[blank_end] diagram shows all the forces acting on a single object.
Responda
-
free body
Questão 36
Questão
What is weight?
Responda
-
the force on an object due to mass and the amount of gravity.
-
the amount of matter an object has
Questão 37
Questão
What is the equation for weight?
Responda
-
Weight =mass *gravity field strength
-
W=mg
-
W=v/t
Questão 38
Questão
On the earth the gravity is [blank_start]9.8 N/kg.[blank_end]
Responda
-
9.8 N/kg
Questão 39
Questão
On the moon the gravity is [blank_start]1.6 N/kg.[blank_end]
Responda
-
1.6 N/kg
Questão 40
Questão
What are forces measured using?
Responda
-
Newton meter
-
ammeter
Questão 41
Questão
The units for force are:
Responda
-
newtons
-
amps
Questão 42
Questão
Newton's first law- Unbalanced forces cause an acceleration.
Responda
- True
- False
Questão 43
Questão
Newton's second law -An object's mass affects how much force is needed to accelerate it.
Responda
- True
- False
Questão 44
Questão
According to Newton's second law, what's the equation for acceleration?
Responda
-
acceleration=force/mass
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acceleration=mass/force
Questão 45
Questão
The unit for acceleration is m/s
Responda
- True
- False
Questão 46
Questão
The unit for mass is kg
Responda
- True
- False
Questão 47
Questão
What is newton's 3rd law?
Responda
-
Forces acting on an object come in pairs
-
Force is the same as gravity
Questão 48
Questão
What is electricity?
Responda
-
The movement of charged particles, generally electrons.
-
movement of acceleration.
Questão 49
Questão
[blank_start]Current[blank_end] is the rate of flow of charge.
Responda
-
Current
Questão 50
Questão
Voltage is the [blank_start]energy[blank_end] per charge.
Responda
-
energy
Questão 51
Questão
Resistance is a measure of how hard it is for [blank_start]current[blank_end] to flow.
Responda
-
current
Questão 52
Questão
A conductor allows energy to flow through it as it has many free electrons.
Responda
- True
- False
Questão 53
Questão
What does an ammeter do?
Responda
-
Measures the current in a series circuit
-
Measures the current in a parallel circuit
Questão 54
Questão
The current in a series circuit is the same all around the circuit.
Responda
- True
- False
Questão 55
Questão
The longer the wire, the lower the resistance.
Responda
- True
- False
Questão 56
Questão
power = current * voltage
Responda
- True
- False
Questão 57
Questão
The diode allows current to flow in 1 direction.
Responda
- True
- False
Questão 58
Questão
A motor converts [blank_start]electrical energy[blank_end] into kinetic energy.
Responda
-
electrical energy
Questão 59
Questão
The thermistor changes resistance with water.
Responda
- True
- False
Questão 60
Questão
The buzzer converts electrical energy into [blank_start]sound[blank_end] energy.
Responda
-
sound
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