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WorksheetsScience-Physic Chap6-7
Total questions: 45
Worksheet time: 23mins
(a) means increase in the size of a substance (solid, liqiud, gas) when the temperature is increase (∆T)
Status of this picture from left to right are
Gases, solid, liquids
Solid, liquids, gases
Liquids, solid, gases
According to the kinetic theory of matter, atoms would be moving the fastest in:
Fluids
Gases
Solid
Fluids
Which of these is not true for solids?
Particles can move freely
Particles vibrate about a fixed position
Particles are held by strong inter-molecular forces
Particles are regularly arranged
Assuming the graph shown is for water which section shows a change of state from solid to liquid?
A-B
B-C
C-D
D-E
Assuming the graph shown is for water which section shows a change of state from liquid to gas?
A-B
B-C
C-D
D-E
What happens to the molecules of a solid when it is heated?
Slow down
Speed up
Don't change speed
Shrink
Choose the symbol which denotes the 'coefficient of expansion'
θ
ρ
Σ
α
What does the following symbol 'Δ' denote?
Sum of
Coefficient of Expansion
Change in
Temperature
Select the correct formula to calculate linear change in length...
ΔL = LαΔT
ΔT = ΔL/Lα
σ = F/A
ε = ΔL/L
If two objects have different temperatures, heat will flow from the cooler object to the warmer one.
True
False
What is Thermal expansion?
The transfer of thermal energy between materials by the collisions of particles
Is a decrease in a materials size when temperature decreases
An increase in a materials size when temperature increases
Chicken fried rice
Thermal expansion of liquid depends on the expansion of the container that it fills. However, why does liquid overflow after heating?
because container does not expand
because coefficient of volume expansion for liquid is bigger than the container
because liquid and container expand at the same amount
because particles in solid container is more closely packed together than liquid
All of the following are conductors except _______.
metal spoon
wire
iron nail
plastic spoon
Heat transfers from an area of ____temperature to an area of ___ temperature.
high to low
low to high
high to high
It can travel high to low and low to high.
Many objects, such as train tracks and road joints, are specifically designed to allow extra space for ...
thermal energy
specific heat
thermal expansion
conductors
The liquid in the thermometer rises when it is placed in the hot water because ___________.
it gains heat from the hot water and expands.
loses heat from the hot water and contracts.
the surrounding air is too warm.
the liquid is boiling.
Which of the following increases when an object becomes warmer?
chemical energy
elastic potential energy
nuclear energy
thermal energy
Why does hot air rise compared to the surrounding air?
It is less dense.
It is more dense.
It has the same density.
Hot coffee is stirred with a spoon, the spoon gets hot due to
Convection
Radiation
Conduction
The picture shows a bimetallic strip in a fire alarm. When there is a fire outbreak, the bimetallic strip will get hot, ....
bend downwards, complete the circuit and the alarm rings.
bend upwards, open the circuit and the alarm will not ring.
becomes longer, open the circuit and the alarm will not ring.
Thermal expansion of liquid depends on the expansion of the container that it fills. However, why does liquid overflow after heating?
because container does not expand
because coefficient of volume expansion for liquid is bigger than the container
because liquid and container expand at the same amount
because particles in solid container is more closely packed together than liquid
Particles of a liquid
are tightly packed together and stay in a fixed position.
decrease in volume with increasing temperature.
are free to move around one another but still touch.
have no viscosity.
The slower the particles in a substance move,
the colder it is.
the warmer it is.
the more energy it has.
This is an example of heat transfer by:
Conduction
Convection
Radiation
Burning
Winds form due to heat transfer by:
Radiation
Conduction
Convection
Air flow
Sunlight reaches Earth via:
Conduction
Convection
Radiation
Concrete would heat up quicker than steel
Ice would heat up quicker than concrete
Glass would heat up quicker than concrete
Copper would cool off slower than steel
Strip A has a higher heat capacity
Strip B has a higher heat capacity
A bitmetallic switch would be ineffective in a/an:
Furnace
Refrigerator
Water heater
Cell phone
A bimetallic strip is made up of _____________________ welded together.
two metals of the same kind
two different metals that expand and contract unequally
two different metals that expand and contract equally
Which is NOT an insulator.
Wool
Plastic
Glass
Copper
Is iron a conductor or insulator?
Conductor
Insulator
Is wood a conductor or insulator?
Insulator
Conductor
Conductors are materials that...
Allow heat to pass through
Stop heat from passing through
Allow cold to pass through
Stop cold from passing through
The kind of heat transfer that travels through space in electromagnetic waves is ______________________.
insulation
Radiation
Conduction
Convection
Warm air rises and the cool air sinks demonstrates this type of heat transfer.
conduction
convection
radiation
Insolation
The Gulf Stream is a current that brings warm ocean water from the south to the north. What type of heat transfer is this?
conduction
convection
radiation
Insolation
A group of friends gather around a fire to stay warm.
conduction
convection
radiation
Water has a specific heat of 4184 J/KgºC. Wood has a specific heat of 1760 J/KgºC. What material needs more energy to raise the temperature 1ºC
Wood
Water
Both are the same
Copper, Stainless Steel, Carbon Steel, and Zinc were all heated using the same thermal energy. What material would be the coolest after being heated?
Copper
Carbon Steel
Zinc
Stainless Steel
What is Specific Heat?
The amount of thermal energy required to increase the temperature of 1kg of a material by 1°C.
The amount of radiant energy required to increase the temperature of 1kgof a material by 1°C
The amount of energy required to increase the temperature of 2 kg of a material by 1°C.
The amount of friction required to increase the temperature of 1 kg of a material by 1°C.
A high specific heat means...
It heats up quickly with energy added
It requires more energy to change temperature
What has particularly high specific heat?
Water
Gases
Metals
Poptarts
Objects gain heat and _________.
expand
contract
