Test
Physics Quiz
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Preguntas del test (60)
1What is energy?
- AMeasure of what an object can do
- BMeasure of the matter an object has
- CMeasure of the distance covered per unit time
2Energy is measured in [blank_start]Joules.[blank_end]
- AJoules
3Which one of the option listed below are types of energy?
- ANuclear potential energy
- BAcidic energy
- CKinetic energy
- DGas energy
4Energy can be destroyed.
- AVerdadero
- BFalso
5Energy can be transformed from one type to another.
- AVerdadero
- BFalso
6[blank_start]Heat[blank_end] is a way of transferring energy.
- AHeat
7Work done is a measure of energy.
- AVerdadero
- BFalso
8What unit does work done have?
- AJoules
- BWatts
- CVolts
- DKilograms
9Work done calculates how much energy is needed to move an object with a [blank_start]force[blank_end] and a distance.
- Aforce
- Bspeed
- Cheight
10What is the equation for work done?
- AWork done = force*distance
- Bwork done=energy /time
11The force is measured in [blank_start]newtons[blank_end] (N)
- Anewtons
12The distance is measured in centimetres.
- AVerdadero
- BFalso
13Power calculates :
- Athe rate at which energy is delivered
- Bthe speed of something
14P=E/t
- AVerdadero
- BFalso
15The unit of power is [blank_start]watt[blank_end] (W) and the [blank_start]time[blank_end] is always in seconds (s).
- Awatt
- BVolt
- CJoules
- Dtime
- Eenergy
- Fdistilation
16Efficiency shows the percentage of energy that is converted into:
- Auseful energy
- Bwasted energy
17Efficiency = 100(Useful energy output/ total energy input)
- AVerdadero
- BFalso
18The energy contained in foods is [blank_start]chemical[blank_end] energy.
- Achemical
19What is a calorie?
- Aunit of energy used for how much energy is in food
- Bunit of speed for how fast a vehicle can travel
201 Kcal =4841J
- AVerdadero
- BFalso
21What is an energy resource?
- AWhere the energy comes from
- Bwhere the source of energy comes from
22What is a non-renewable energy resource?
- Aresource that will one day run out
- Bit will never run out
23Where does energy for tidal power come from?
- Athe sun
- Bthe moon
24Nuclear power is when radio active material , usually uranium or thorium , is bombarded with neutrons.
- AVerdadero
- BFalso
25What is the difference between biomass and biofuel?
- Abiomass is used to produce biofuel
- Bbiomass is bigger than biofuel
26What is speed?
- Ait's the distance covered per unit tme
- Bit's the height covered per unit time
27s=d/t
- AVerdadero
- BFalso
28What is the unit for speed?
- Am/s
- Bmph
29What is the unit for distance?
- Ametres
- Bkilometres
30On a distance time graph, the steeper the line , the [blank_start]faster[blank_end] the object is moving.
- Afaster
31On a distance time graph, a [blank_start]straight[blank_end] line shows a constant speed.
- Astraight
32Velocity describes the [blank_start]speed[blank_end] at which something is travelling and the [blank_start]direction.[blank_end]
- Aspeed
- Bdirection
33Acceleration = velocity / time
- AVerdadero
- BFalso
34What is a contact force?
- Ait acts directly on the object
- Bit acts at a distance from an object
35A [blank_start]free body[blank_end] diagram shows all the forces acting on a single object.
- Afree body
36What is weight?
- Athe force on an object due to mass and the amount of gravity.
- Bthe amount of matter an object has
37What is the equation for weight?
- AWeight =mass *gravity field strength
- BW=mg
- CW=v/t
38On the earth the gravity is [blank_start]9.8 N/kg.[blank_end]
- A9.8 N/kg
39On the moon the gravity is [blank_start]1.6 N/kg.[blank_end]
- A1.6 N/kg
40What are forces measured using?
- ANewton meter
- Bammeter
41The units for force are:
- Anewtons
- Bamps
42Newton's first law- Unbalanced forces cause an acceleration.
- AVerdadero
- BFalso
43Newton's second law -An object's mass affects how much force is needed to accelerate it.
- AVerdadero
- BFalso
44According to Newton's second law, what's the equation for acceleration?
- Aacceleration=force/mass
- Bacceleration=mass/force
45The unit for acceleration is m/s
- AVerdadero
- BFalso
46The unit for mass is kg
- AVerdadero
- BFalso
47What is newton's 3rd law?
- AForces acting on an object come in pairs
- BForce is the same as gravity
48What is electricity?
- AThe movement of charged particles, generally electrons.
- Bmovement of acceleration.
49[blank_start]Current[blank_end] is the rate of flow of charge.
- ACurrent
50Voltage is the [blank_start]energy[blank_end] per charge.
- Aenergy
51Resistance is a measure of how hard it is for [blank_start]current[blank_end] to flow.
- Acurrent
52A conductor allows energy to flow through it as it has many free electrons.
- AVerdadero
- BFalso
53What does an ammeter do?
- AMeasures the current in a series circuit
- BMeasures the current in a parallel circuit
54The current in a series circuit is the same all around the circuit.
- AVerdadero
- BFalso
55The longer the wire, the lower the resistance.
- AVerdadero
- BFalso
56power = current * voltage
- AVerdadero
- BFalso
57The diode allows current to flow in 1 direction.
- AVerdadero
- BFalso
58A motor converts [blank_start]electrical energy[blank_end] into kinetic energy.
- Aelectrical energy
59The thermistor changes resistance with water.
- AVerdadero
- BFalso
60The buzzer converts electrical energy into [blank_start]sound[blank_end] energy.
- Asound
Información
- Descripción
- Year 7 Physics Test sobre Physics Quiz, creado por Lakshmi Lakshmanan el 17/05/2017.
- Autor
- Lakshmi Lakshmanan
- Idioma
- English
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- 19
- Etiquetas
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