Physics Revision

Answer all these right, you will do well in your exam!

Don't use capitals.

Don't use punctuation

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Last updated: April 15, 2019

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First submitted	April 14, 2019
Times taken	7
Average score	1.6%
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Questions	Answers
What is the calculation of Wave Speed?	wavelength x frequency
What is the calculation of Speed?	distance divided by time
What is the calculation of Wave Period?	1 divided by frequency
What does a wave do?	transports energy from one place to another
Order EM waves from highest wavelength to lowest.	radio and microwave and infrared and visible light and ultraviolet and x-ray and gamma ray
What is the danger and use of Radio Waves?	radio waves are safe and are used for communications and tv and radio
What is the danger and use of Microwaves?	microwaves burn if concentrated and are used for mobile phones and cooking
What is the danger and use of Infrared?	infrared burn if concentrated and are used for heating and cooking
What is the danger and use of Visible Light?	visible light can cause damage to eyes and are used for photography and illumination
What is the danger and use of Ultraviolet?	ultraviolet can cause sunburn or cancer and are used for security marking
What is the danger and use of X-Ray?	x-ray can cause cell destruction or cancer and are used for broken bones and security
What is the danger and use of Gamma Ray?	gamma ray can cause cell destruction or cancer and are used for detecting and killing cancer
What is a transverse wave?	vibration causing the wave at right angles to the direction of energy transfer
What is a longitudinal wave?	vibration causing the wave to be parallel to the direction of energy transfer
What is Density?	mass per volume
What is the calculation of density?	mass divided by volume
What is Evaporation?	liquid to gas
What is Condensation?	gas to liquid
What is freezing?	liquid to solid
What is melting?	solid to liquid
What is specific latent heat of fusion?	the energy required to change 1kg of substance from solid to liquid
What is specific latent heat of vaporisation?	the energy required to change 1kg of substance from liquid to gas
What is the calculation of latent heat?	energy divided by mass
What is Internal Energy?	the combined energy of kinetic and potential energy of the particles in a substance
How do you increase Internal energy?	heating the substance which will increase the particles kinetic energy and therefore the overall internal energy
What is the calculation of change in thermal energy?	mass x specific heat capacity x temperature change
What is a force?	a pull or push that is applied by an object on another
What is the calculation of weight?	mass x gravitational field strength
Name 4 contact forces	friction and air resistance and tension and reaction
Name 3 non-contact forces	gravitational and magnetic and electrostatic
What are scalar quantities?	has size and no direction

Questions	Answers
What are vector quantities?	has size and direction
What are examples of scalar?	speed and mass and distance and energy and time and power
What are examples of vector?	velocity and acceleration and force and weight and friction and air resistance
What is resultant force?	net or total force acting on an object
What is the calculation of resultant force?	mass x acceleration
What is speed?	how far something travels in a given time
What is velocity?	speed in a given direction
What is the calculation of gradient?	change in y divided by change in x
What is the calculation of average speed?	total distance divided by time taken
What is the calculation of acceleration?	change in velocity divided by time taken
What is the calculation of stopping distance?	thinking distance plus breaking distance
Name factors affecting thinking distance.	poor visibility and tiredness and too many drugs
Name factors affecting breaking distance.	icy/wet roads and driving too fast and tyres/breaks worn out
What is the calculation of momentum?	mass x velocity
Name 6 energy stores	kinetic and internal and electrical and magnetic and elastic potential and gravitational potential
What is kinetic energy?	depends on mass and speed of the object
What is internal energy?	contains thermal and chemical energy
What is elastic potential energy?	stretched or squashed materials keeping its shape
What is gravitational potential energy?	depends on mass and extra height and gravitational field strength
What is electrical energy?	carries electrical charges and exerts forces on each other
What is magnetic energy?	can be magnetised and exert forces on other magnetised forces
Name 2 Renewable energy sources.	nuclear power and solar power
Name 2 Non-Renewable energy sources	oil and coal
What is wavelength?	distance from one point on a wave to the same point of the next wave
What is amplitude?	the maximum disturbance from its rest position
What is frequency?	number of waves per second
What is period?	time taken to produce 1 complete wave
What is a solid?	regular pattern and fixed position and vibrates on spot and strong force
What is a liquid?	random arrangement and close and movement and weak force
What is a gas?	random arrangement and spread out and movement and very weak force

Level 42

Apr 14, 2019

Good questions what I see in stats. But there are no questions :)

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