WorksheetsEnergy Transfers
Total questions: 27
Worksheet time: 15mins
When we know the temperature of something, do we know how hot it is, or how much internal energy there is?
How much internal energy there is
How hot it is
Temperature is measured in...
(a)
Internal (thermal) energy is measured in...
(a)
The amount of internal (thermal) energy stored in something depends on...
It's kinetic energy
It's mass
The material it's made from
How hot it is (it's temperature)
When two objects are at different temperatures, how will energy be transferred?
From the cooler one to the hotter one until they are the same temperature
Nothing will happen because the two objects aren't touching
Convection
From the hotter one to the cooler one until they are the same temperature
Evaporation can take place in a liquid at any temperature
True
False
When part of a liquid evaporates, it is the ..... ...... particles to form a gas
(a)
In evaporation, after some particles leave to form a gas, the remaining liquid is storing less energy as movement. What is the temperature of the remaining liquid?
The same
Colder
Hotter
Freezing
Where does conduction take place
Solids
Empty space
Gasses
Liquids
The particles in a solid are held together tightly. When they gain energy they vibrate ...... and further, and the vibrations are passed on.
steadily
into the air
faster
slower
What are the best conductors?
Sulphurs
Solids
Metals
Mugs
Why is conduction not very good in liquids or gasses?
Because the particles are further apart
Because particles in liquids or gasses don't vibrate
Because liquids are bad
Because they are thermal insulators
What is something that doesn't conduct heat very well
A blowtorch
Copper pot
Thermal insulators
Metal
Insulators are when solids, liquids and gasses contain lots of trapped (a)
Where does convection take place?
Solids
Liquids
Fluids
Air
When a part of a fluid is heated, the particles spread....
Further apart
Closer together
On toast
Towards eachother
After the particles spread further apart, the fluid becomes...... ......
(a)
When the particles become less dense, what do the particles do?
Rise
Fall
As the particles rise, they meet cooler fluid particles and pass the energy on
False
True
More cool fluid moves in to replace the rising fluid, setting up a...... ......
(a)
Where can infrared radiation transfer energy?
Solids
Transparent materials
Empty space
Fluids
Radiation does not require the (a) of particles
Not every hot or cold object emits radiation
True
False
What happens when something takes in radiation?
It shrinks
It expands
It is said to absorb it
It is said to heat up
What is radiation similar to?
Me
Light
Sound
Space
Radiation can be absorbed or ...1... and it can also be ...2...
1. radiated
2. focused
1. light
2. found in empty space
1. reflected
2. focused
1. Reflected
2. transmitted
Dark, dull surfaces are poor absorbers and emitters of radiation
True
False
