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WorksheetsQuiz for 10J1 (Post Test)
Total questions: 101
Worksheet time: 1hrs 3mins
Energy is measured in.....
kilograms
metres per second
Joules
metres
Which energy store is missing? Magnetic, electrostatic, nuclear, gravitational, elastic, thermal, chemical and....
heating
lighting
kinetic
sounding
Energy cannot be created or destroyed, it can only be _________ between the stores
removed
dissipated
transferred
stored
When a kettle boils, energy is transferred from the electrostatic store to the _________________ energy store.
chemical
kinetic
elastic
thermal
On a rollercoaster, the gravitational potential is at its highest/lowest when it reaches the top of the track
highest
lowest
On a rollercoaster, gravitational energy is transferred to which other two energy stores?
thermal and electrostatic
kinetic and chemical
kinetic and nuclear
thermal and kinetic
Work done is another way of saying energy is transferred. What are the units of measurement fir work done?
kilograms
Joules
Degrees celcius
Joules per kilogram degrees celcius
What is the equation to work out kinetic energy?
mass x velocity
0.5 x mass x velocity
0.5 x mass x velocity3
0.5 x mass x velocity2
What is the equation to work out gravitational potential energy?
mass x gravitational field strength x height
0.5 x mass x velocity2
mass x height
height x gravitational field strength
What is the unit of measurement for mass?
grams
kilograms
metres
metres per second
Power = ______________ ÷ time
mass
height
energy
work done
What is the unit of measurement for Power?
metres
kilograms
Watts
Joules
Insulation reduces the rate of energy transfer by heating. What methods below do we use in our homes to reduce wasted energy?
double glazed windows
log burners
thick carpets
cavity wall insulation
Lubricating certain machines or bikes reduces which type of force?
air resistance
tension
magnetic
friction
Which of the following is NOT a store of energy?
Kinetic
Gravitational Potential
Elastic potential
Thermal
Sound
Which of the following is NOT a transfer of energy?
Heating
Kinetically
Mechanically
Electrically
Waves
Which is the correct equation that links work done, power and time?
power = work done x time
time = power x work done
work done = power x time
work done = power / time
What is the equation that links extension (e), force applied to a spring (F) and spring constant (k)?
Force applied to a Spring = Spring Constant x Extension, or F=ke
Force applied to a Spring = Spring Constant / Extension, or F=k/e
Force applied to a Spring = Extension / Spring Constant, or F=e/k
What is the equation that links gravitational field strength (g), gravitational potential energy (Eg), height (h), and mass (m)?
Gravitational Potential Energy = Mass x Gravitational Field Strength x Height, or Eg=mgh
Gravitational Potential Energy = Mass / (Gravitational Field Strength x Height), or Eg=m/(gh)
Gravitational Potential Energy = Mass x Gravitational Field Strength / Height, or Eg=mg/h
What is the equation that links energy transferred (E), power (P) and time (t)?
Power = Energy Transferred / Time, or P=E/t
Power = Time / Energy Transferred, or P=t/E
Power = Energy Transferred x Time, or P=Et
What is the equation that links efficiency, total power (or energy) in and useful power (or energy) out?
Efficiency = Useful Power (or Energy) Out / Total Power (or Energy) In
Efficiency = Useful Power (or Energy) Out x Total Power (or Energy) In
Efficiency = Total Power (or Energy) In / Useful Power (or Energy) Out
What is the equation that links Power (P), Time (t) and Work Done (W)?
Power = Time x Work Done, or P=tW
Power = Time / Work Done, or P=t/W
Power = Work Done / Time, or P=W/t
What is the independent variable
Anything that can change
The thing you change
The thing you measure at the end
The thing you keep the same
What is the dependent variable
Anything that can change
The thing you change
The thing you measure at the end
The thing you keep the same
What is a control variable
Anything that can change
The thing you change
The thing you measure at the end
The thing you keep the same
A prediction is...
... just a lucky guess
... what you think will happen and why
... an estimate
What does this define: To find the ______, order the numbers and see which one is in the middle of the list.
median
mode
range
mean
What is a variable
Anything that can change
The thing you change
The thing you measure at the end
The thing you keep the same
In the insulation practical what is the independent variable?
Time taken
Thickness of insulation
Temperature change
The thermometer
In the insulation practical which of these are control variables?
initial temperature of the water
final temperature of the water
time the temperature is measured over
volume of the water
What does this define: To find the _______, add all the numbers together then divide by the number of numbers.
median
mode
range
mean
In a practical to test the effectiveness of different insulators what would the dependent variable be?
The temperature difference
The initial temperature of the water
The thickness of the insulator used
The type of insulator used
What does this define: To find the ________, subtract the lowest number from the biggest number.
median
mode
range
mean
How should you present the analysis of an investigation where the independent and dependent variables are both continuous?
Pie Chart
Bar Chart
Scatter Graph
What does this define: To find the ______, order the numbers lowest to highest and see which number appears the most often.
median
mode
range
mean
What does insulation do?
Slow down heat transfer out of your house
100% stops heat transferring out of your house
Heats your house up
What type of insulation is this?
Loft insulation
Cavity wall
Double glazing
Draught proofing
What does double glazing reduce?
Conduction
Convection
Both conduction and convection
What doe the fibers of loft insulation do?
Tickle your feet
Trap air
Heat the floor
What type of insulation is this?
Double glazing
Cavity wall insulation
Loft insulation
Cavity wall insulation stops air from moving. It reduces....
convection
conduction
conservatives
Which one of these insulation types also cuts down on road noise?
Loft insulation
Double glazing
Draught proofing
Conduction happens in
solids
liquids
gases
liquids and gases
Convection happens in
liquids and gases
only liquids
solids
only gases
Which insulation is cheapest?
Double glazing
Loft insulation
Draught proofing
Cavity wall insulation
Which of these is the correct equation for density?
Density = mass x volume
Density = mass /volume
Density = volume/mass
Density = mass/volume^3
Which state of matter does this particle diagram most closely represent?
Solid
Liquid
Gas
Plasma
Which state of matter is the most dense?
Solid
Liquid
Gas
Plasma
What state of matter does the following describe?
"a state of matter that has no fixed shape and no fixed volume"
(a)
What pieces of equipment would I use to find the volume of an irregularly shaped object?
Newton meter and volume meter
Balance, Ruler, then do length x mass x depth
Balance and eureka beaker
Eureka Beaker and measuring cylinder
A substance is changing state from a gas to a liquid. What do we call this?
(a)
When a substance changes state, there is a change in mass. True or false?
True
False
Internal energy is....(2 answers)
...stored in the atoms and molecules that make up the system
...the sum of the total kinetic energy and potential energy of particles
... the stored in gases when they are moved around
...increased by moving the substance from one place to another
Look at the following equation E = m c Δθ What does the c stand for?
Mass
change in temperature
Latent heat
specific heat capacity
Look at the equation: E=mcΔθ Calculate the energy needed to heat 10kg of water (with a SHC of 4200J/kg*C) from 20*C to 30*C
42,000J
42J
420,000J
1,260,000J
Look at the equation: E=mL What does the L stand for?
Latent Heat
Mass
Energy
Specific Heat Capacity
What is happening at D?
Liquid changing state into a gas - potential energy of particles is constant
Liquid being heated - kinetic energy of particles is increasing
Liquid being heated, temperature remains constant as there is no energy transfer
Liquid changing state into a gas - temperature of substance remains constant
James wants to find the energy needed to change the temperature of a block of copper from room temperature to 100*C. What property of Copper does he need to know?
Specific Latent Heat of fusion
Specific Latent Heat of vaporisation
Specific Heat Capacity
What happens to the particles in a gas when it is heated?
Particles average kinetic energy increases
Particles move more randomly
They hit into each other less frequently
The pressure of the gas decreases
A gas is kept at a constant volume, but it is heated up. What happens to the pressure of the gas?
Pressure increases because particles hit the sides of the container more frequently (they have more KE)
Pressure increases because particles hit the sides each other more frequently (they have more KE)
Pressure decreases because particles have more room to move so don't hit the sides of the containers as often.
Pressure decreases because particles have more room to move so don't hit each other as often.
A gas is kept at a constant temperature but it's volume is decreased. What happens to the pressure of the gas?
It increases as the particles have more kinetic energy and hit the sides of the container more
It increases as the particles have less space to move, so hit the sides of the container more frequently
It decreases as the particles have less kinetic energy and hit each other less
It decreases as the particles have more space to move, so hit each other less
Which of the following statements is true?
Volume x pressure = constant
volume x pressure = temperature x volume
volume/pressure = constant
volume x number of particles = temperature x pressure
What is the unit for pressure?
Pa
J
kg/m3
N
What is it called when a liquid changes state to a solid?
(a)
What is it called when a liquid changes state to a gas?
(a)
What does the Kinetic Theory of Matter suggest about particles?
Particles are only present in gases.
All particles are stationary.
Particles do not exist in solids.
Particles are always in motion.
According to the Kinetic Theory, how does temperature affect particle motion?
Temperature changes cause particles to disappear.
The lower the temperature, the faster the particles move.
Temperature has no effect on particle motion.
The higher the temperature, the faster the particles move.
What state of matter are particles packed tightly in a regular pattern?
Solid
Plasma
Liquid
Gas
What is the process called when a solid turns into a liquid?
Freezing
Melting
Sublimation
Condensation
What is density?
A measure of how much space an object occupies, volume per object
A measure of how much mass is packed into a given volume, mass per unit volue
A measure of how much air an object contains, mass of air per object
A measure of the weight of an object, in newtons
What does the Law of Conservation of Mass state?
Mass is only conserved in physical changes, not chemical reactions.
Mass can be created and destroyed easily.
Mass decreases over time in a closed system.
Mass cannot be created or destroyed in a closed system.
What happens to the particles of a substance during melting?
Particles gain kinetic energy and start to vibrate faster.
Particles lose all their energy.
Particles spread out into a loser structure.
Particles gain potential energy and bonds are broken.
What is specific heat capacity?
The amount of thermal energy needed to change the state of 1 kg of a substance.
The amount of thermal energy needed to raise the temperature of 1 kg of a substance by 1°C.
The amount of thermal energy a substance can hold at one time.
The temperature increase when thermal energy is applied to a substance.
What does absolute zero refer to?
The highest possible temperature measured in Kelvin.
The point at which a substance has maximum kinetic energy.
The average temperature of space.
The temperature at which all molecular motion stops.
What is the Ideal Gas Law represented by?
PV = nRT
F = ma
V = IR
E = mc^2
Increasing the temperature of a fixed volume of gas increases the pressure. Pick the 2 correct explanations for this.
The rate of collisions between particles increases
The force of the collisions between particles increases
The rate of particle collisions with the walls increases
The force of the collisions with the walls increases.
If a fixed mass of air is compressed at constant temperature, the pressure increases. Pick 2 correct statements which together explain this.
The mass of air is squashed more so exerts more pressure outwards
There are more collisions per unit area of the walls
The number of particles stays the same but the area of the walls decreases
The particles are travelling faster so there is a higher rate of collisions with the walls
Put these statements into a suitable order to explain evaporation
Evaporation can take place at temps below the boiling point
which is because the particles have a range of different Ek's
and those with the highest Ek have enough energy to escape the surface
which leaves the remaining particles with a lower average Ek
and hence a lower temperature
Particles with higher velocity have higher (a)
Comparing solids and liquids, which of the following are TRUE? (choose 2)
Their densities are very similar
Their arrangement is identical
Their internal energy is the same
Solids have a regular array whilst liquids have a random arrangment
When explaining pressure in terms of the particle model, we should always... (pick 3)
Discuss collisions between particles
Discuss collisions with the walls of the container
Use the formula P=F/A to help explain
Remember to consider both the force per collision, and the rate of collisions
Remember to consider both the force of the collisions and the number of collisions
