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Measure of what an object can do
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Measure of the matter an object has
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Measure of the distance covered per unit time
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Energy is measured in [blank_start]Joules.[blank_end]
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Which one of the option listed below are types of energy?
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Nuclear potential energy
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Acidic energy
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Kinetic energy
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Gas energy
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Energy can be destroyed.
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Energy can be transformed from one type to another.
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[blank_start]Heat[blank_end] is a way of transferring energy.
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Work done is a measure of energy.
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What unit does work done have?
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Joules
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Watts
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Volts
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Kilograms
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Work done calculates how much energy is needed to move an object with a [blank_start]force[blank_end] and a distance.
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What is the equation for work done?
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The force is measured in [blank_start]newtons[blank_end] (N)
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The distance is measured in centimetres.
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The unit of power is [blank_start]watt[blank_end] (W) and the [blank_start]time[blank_end] is always in seconds (s).
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watt
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Volt
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Joules
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time
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energy
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distilation
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Efficiency shows the percentage of energy that is converted into:
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useful energy
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wasted energy
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Efficiency = 100(Useful energy output/ total energy input)
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The energy contained in foods is [blank_start]chemical[blank_end] energy.
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What is an energy resource?
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What is a non-renewable energy resource?
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Where does energy for tidal power come from?
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Nuclear power is when radio active material , usually uranium or thorium , is bombarded with neutrons.
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What is the difference between biomass and biofuel?
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What is the unit for speed?
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What is the unit for distance?
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On a distance time graph, the steeper the line , the [blank_start]faster[blank_end] the object is moving.
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On a distance time graph, a [blank_start]straight[blank_end] line shows a constant speed.
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Velocity describes the [blank_start]speed[blank_end] at which something is travelling and the [blank_start]direction.[blank_end]
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Acceleration = velocity / time
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What is a contact force?
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A [blank_start]free body[blank_end] diagram shows all the forces acting on a single object.
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What is the equation for weight?
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On the earth the gravity is [blank_start]9.8 N/kg.[blank_end]
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On the moon the gravity is [blank_start]1.6 N/kg.[blank_end]
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What are forces measured using?
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The units for force are:
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Newton's first law- Unbalanced forces cause an acceleration.
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Newton's second law -An object's mass affects how much force is needed to accelerate it.
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According to Newton's second law, what's the equation for acceleration?
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acceleration=force/mass
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acceleration=mass/force
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The unit for acceleration is m/s
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The unit for mass is kg
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What is newton's 3rd law?
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What is electricity?
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[blank_start]Current[blank_end] is the rate of flow of charge.
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Voltage is the [blank_start]energy[blank_end] per charge.
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Resistance is a measure of how hard it is for [blank_start]current[blank_end] to flow.
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A conductor allows energy to flow through it as it has many free electrons.
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What does an ammeter do?
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The current in a series circuit is the same all around the circuit.
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The longer the wire, the lower the resistance.
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power = current * voltage
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The diode allows current to flow in 1 direction.
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A motor converts [blank_start]electrical energy[blank_end] into kinetic energy.
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The thermistor changes resistance with water.
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The buzzer converts electrical energy into [blank_start]sound[blank_end] energy.