Physics Paper 2
0.0 / 5
- Created by: annelister12
- Created on: 21-06-22 10:22
How to draw a vector diagram?(6)
1. Choose a scale e.g 1N = 1cm
2. Draw a point to represent your object
3. Draw one line with one of the values
4. Measure the angle + draw the other line
5. Carry the line on + measure the angle again to make a parallelogram
6.Measure length from tip-tai
2. Draw a point to represent your object
3. Draw one line with one of the values
4. Measure the angle + draw the other line
5. Carry the line on + measure the angle again to make a parallelogram
6.Measure length from tip-tai
1 of 31
How to draw a vertical/horizontal components diagram?(5)
1. Draw a point to represent object
2. Draw your x and y axis
3. Measure the angle given + draw a line using your scale e.g 1N = 1cm
4. Draw dotted lines from arrow down to components
5. Draw on your vertical/horizontal components from your object
2. Draw your x and y axis
3. Measure the angle given + draw a line using your scale e.g 1N = 1cm
4. Draw dotted lines from arrow down to components
5. Draw on your vertical/horizontal components from your object
2 of 31
As a man pushes a box along the floor, how does work done affect temperature?
Man is applying a forward force
Box is friction
The chemical energy store in his muscles is transferred to the thermal energy store of the box
Hence work is done and temperature rises
Box is friction
The chemical energy store in his muscles is transferred to the thermal energy store of the box
Hence work is done and temperature rises
3 of 31
Define elastic deformation
When a force is applied to an object, the object will return to its original shape after the force is removed
4 of 31
Define inelastic deformation
When a force is applied to an object, the object will NOT return to its original shape after the force is removed
5 of 31
What is Hooke's Law?
f = kx
force = spring constant x extension
force = spring constant x extension
6 of 31
How can an object float?(forces)
Bottom of the object is at a greater depth than the top so there's higher pressure, hence a higher force
So upthrust acts upwards on object
If weight of object =/< upthrust force, then it will float
(if > it will sink)
So upthrust acts upwards on object
If weight of object =/< upthrust force, then it will float
(if > it will sink)
7 of 31
Give 3 facors which affect floating/sinking
Height of column of liquid
Weight of object
Density of liquid
Weight of object
Density of liquid
8 of 31
How can an object float?(displacement)
The size of the upthrust acting on the object is the same as the weight of the water displaced by the object
So if an object can displace its own weight of water, it will float
So if an object can displace its own weight of water, it will float
9 of 31
What is the difference between transverse and longitudinal waves + give examples?
Transverse = perpendicular to the direction of energy transfer
e.g LIGHT
Longitudinal = parallel to the direction of energy transfer
e.g SOUND
e.g LIGHT
Longitudinal = parallel to the direction of energy transfer
e.g SOUND
10 of 31
Define amplitude
The distance from the centre line to the top of the trough/crest
11 of 31
Define wavelength
The distance from any point on one wave to the same point on the next wave along
12 of 31
Define frequency
The number of waves passing a point each second
1Hz = 1 wave per second
1Hz = 1 wave per second
13 of 31
Define period
The time it takes for one wave to pass a point
14 of 31
Describe a method to measure the speed of sound waves in air(5)
1. Persons A and B 500m away from each other
2. A holds cymbals and crashes them together
3. B starts timer when she sees A crash cymbals
4.Then B stops the timer when she hears them
5. Use greater distance/large number of observers
2. A holds cymbals and crashes them together
3. B starts timer when she sees A crash cymbals
4.Then B stops the timer when she hears them
5. Use greater distance/large number of observers
15 of 31
How do you construct a ray diagram?(5)
1. Plot F and 2F either side
2. Draw image in between F and 2F
3. From top of object, draw a line straight to the 'y axis' and pass this through F
4. Then from top of object through the origin
5.From 'x axis' down to where they meet = image draw arrow
2. Draw image in between F and 2F
3. From top of object, draw a line straight to the 'y axis' and pass this through F
4. Then from top of object through the origin
5.From 'x axis' down to where they meet = image draw arrow
16 of 31
Explain that motion in a circle involves constant speed but changing velocity
The force of gravity holds satellites in orbit
Direction is constantly changing
But the speed at which it's moving doesn't change
Direction is constantly changing
But the speed at which it's moving doesn't change
17 of 31
Describe how an object reaches terminal velocity
As an object falls, the force of gravity(which remains constant) is more than the force of air resistance. The object accelerates, but as speed increases, air resistance increases too because more collisions with air particles are happening. Eventually, t
18 of 31
Explain how a safety feature of a car works. Refer to the concept of rate of change of momentum in your answer.
Seatbelts slow down the change in momentum
This reduces the forces acting on passengers and reduces the risk of injury
This reduces the forces acting on passengers and reduces the risk of injury
19 of 31
Give 4 points to compare the properties of sound waves with light waves
Light waves are transverse, whereas sound waves are longitudinal.
Light waves travel faster than sound waves.
Light waves have a higher frequency than sound waves.
Light waves have a shorter wavelength than sound waves.
Light waves travel faster than sound waves.
Light waves have a higher frequency than sound waves.
Light waves have a shorter wavelength than sound waves.
20 of 31
Describe a method to measure the speed of ripples on a water surface
1. Use a signal generator to create waves in a ripple tank at a set frequency
2. Use a lamp to see waves on paper below
3. Measure the distance between lines to get wavelength(or 10 waves divided by 10)
4. Use the equation to calculate wave speed
2. Use a lamp to see waves on paper below
3. Measure the distance between lines to get wavelength(or 10 waves divided by 10)
4. Use the equation to calculate wave speed
21 of 31
Explain how in orbital motion the radius may need to change
For circular orbits, the force of gravity can lead to changing velocity but unchanged speed.
For a stable orbit, the radius must change if the speed changes
For a stable orbit, the radius must change if the speed changes
22 of 31
Explain how red-shift provides evidence for the expansion of the universe and the Big Bang model
Red-shift = certain elements in stars absorb light of different wavelengths
On spectrums, this shifts as light waves stretch because galaxies are moving away from each other
The fact that distant galaxies are moving away faster than nearby, shows us the u
On spectrums, this shifts as light waves stretch because galaxies are moving away from each other
The fact that distant galaxies are moving away faster than nearby, shows us the u
23 of 31
Describe the Big Bang Theory
The universe began in a very small, hot dense region
This universe expanded into our current universe
This universe expanded into our current universe
24 of 31
Explain how studying galaxies provides evidence of an expanding universe
The change of each galaxy's speed with distance is evidence that the universe is expanding
25 of 31
Describe the effects of reflection, transmission and absorption of waves at material interfaces
Reflection = wave bounces back i = r
Transmission = wave passes straight through
Absorption = wave is absorbed light = less intense if glass or emitted as colours
Transmission = wave passes straight through
Absorption = wave is absorbed light = less intense if glass or emitted as colours
26 of 31
Describe the structure of the universe and our solar system
8 planets, 1 sun, many moons
Hundreds of billions of galaxies
Hundreds of billions of galaxies
27 of 31
Describe the life cycle of a star before its main sequence
1. Initially are clouds of dust and gas(nebula)
2. Gravity pulls it together to form a protostar
3. Temperature rises so hydrogen nuclei fuse to form helium
4. This releases lots of energy so a star is born
2. Gravity pulls it together to form a protostar
3. Temperature rises so hydrogen nuclei fuse to form helium
4. This releases lots of energy so a star is born
28 of 31
Describe the life cycle of a star after its main sequence the SIZE of our SUN
(main sequence, expansion = gravity so stable)
Eventually hydrogen runs out
The star swells to make a red giant
Heavier elements<iron created in core
Ejects its outer layer of dust and gas so a solid core is left - white dwarf then cools = black dwarf
Eventually hydrogen runs out
The star swells to make a red giant
Heavier elements<iron created in core
Ejects its outer layer of dust and gas so a solid core is left - white dwarf then cools = black dwarf
29 of 31
Describe the life cycle of a star after its main sequence BIGGER than our sun
Eventually hydrogen runs out
The star swells to make a red super giant
More fusion, then explode into supernova
Forming elements heavier than iron
Dense core of neutron star, if big enough black hole
The star swells to make a red super giant
More fusion, then explode into supernova
Forming elements heavier than iron
Dense core of neutron star, if big enough black hole
30 of 31
When scientists discover new evidence what can they do?
Make a new theory
or change a current one to explain what they've observed
or change a current one to explain what they've observed
31 of 31
Other cards in this set
Card 2
Front
How to draw a vertical/horizontal components diagram?(5)
Back
1. Draw a point to represent object
2. Draw your x and y axis
3. Measure the angle given + draw a line using your scale e.g 1N = 1cm
4. Draw dotted lines from arrow down to components
5. Draw on your vertical/horizontal components from your object
2. Draw your x and y axis
3. Measure the angle given + draw a line using your scale e.g 1N = 1cm
4. Draw dotted lines from arrow down to components
5. Draw on your vertical/horizontal components from your object
Card 3
Front
As a man pushes a box along the floor, how does work done affect temperature?
Back
Card 4
Front
Define elastic deformation
Back
Card 5
Front
Define inelastic deformation
Back
Related discussions on The Student Room
- AS physics »
- GCSE AQA Physics Paper 1 and 2 Revision and Study Chat »
- GCSE Physics Study Group 2022-2023 »
- AQA AS Physics Paper 1 »
- higher physics revision help »
- Required practicals »
- Physics question ripples »
- Nat 5 Physics 2023 »
- SQA Advanced Higher Physics - 25th April 2024 [Exam Chat] »
- More questions like this waves in water problem? »
Similar Physics resources:
1.0 / 5 based on 2 ratings
2.0 / 5 based on 3 ratings
3.5 / 5 based on 3 ratings
0.0 / 5
0.0 / 5
0.0 / 5
0.0 / 5
1.0 / 5 based on 1 rating
Comments
No comments have yet been made