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WorksheetsYear 8: Energy
Total questions: 50
Worksheet time: 27mins
How do we measure temperature?
In degree Celsius
In Inches
In Pounds
In Centimeters
What tool does this picture show?
Thermometer
Thermostat
Scale
What is temperature?
The measure of the kinetic energy or movement of atoms.
The measure of coldness
The space an object takes.
If the atoms of an object are moving fast, the temperature would be...
Higher
Lower
Unknown
If the atoms of an object are moving slow, the object would feel...
Colder
Hotter
Unknown
Thermal energy ALWAYS moves from _____ to _____.
hot to cold
solid to gas
ice to water
solid to liquid
Based on the graph below, the two substances have reached-
thermal equilibrium
thermal entropy
thermal energy
thermal conductivity
Heat flow occurs between two objects when they possess different...
temperatures
specific heats
masses
densities
When an ice cube melts in your hand...
Thermal energy is transferred from your hand to the ice cube.
Thermal energy is transferred from the ice cube to your hand.
Thermal energy gets destroyed and disappears.
Thermal energy does not go anywhere.
The flow of thermal energy from warmer objects to cooler objects is called ______.
heat
friction
movement
energy
The total kinetic energy of moving particles in matter is called _____.
thermal energy
chemical energy
mechanical energy
electrical energy
After taking a hot shower, Juan steps out of the shower
onto the tile floor. The tile felt cold to his feet.
Which explanation below best describes Juan's experience?
Heat from his feet is transferred to the tile floor
Heat from the tile floor is transferred to his feet
Cold from his feet is transferred to the tile floor
Cold from the tile floor is transferred to his feet
Why does a cup of water become colder when ice is added?
Heat flows from the water to the ice
Heat flows from the ice to the water
Cold flows from the water to the ice
Cold flows from the ice to the water
Heat energy flows from HOT to COLD.
True
False
What would be the thermal equilibrium temperature for an object with a temperature of 10℃ if it comes in contact with an object with a temperature of 20℃?
15℃
30℃
20℃
10℃
The measure of average kinetic energy of all the particles within an object is called ____________.
temperature
conduction
heat
radiation
The energy transferred between the particles of two objects because of the temperature difference between the two objects is called ________________.
heat
insulator
conductor
temperature
Which will take less time to heat up?
B
A
Which has a greater store of
thermal energy?
A
B
What is the definition of CONDUCTION?
Transfer of thermal energy by the vibration of particles.
Transfer of thermal energy when particles in a heated fluid rise.
The transfer of energy as a wave.
What is the definition of CONVECTION?
Transfer of thermal energy when particles in a heated fluid rise.
Transfer of thermal energy by the vibration of particles.
The transfer of energy as a wave.
What is the definition of RADIATION?
The transfer of energy as a wave.
Transfer of thermal energy by the vibration of particles.
Transfer of thermal energy when particles in a heated fluid rise.
How many kinds of
heat transfer are there?
3
1
2
4 or more
This is an example of-
Conduction
Convection
Radiation
This is an example of-
Convection
Conduction
Radiation
This is an example of-
Radiation
Convection
Conduction
This is an example of-
Conduction
Convection
Radiation
The way the heat is moving from the
hot coffee is called...
convection
radiation
conduction
insulation
Which of the following is needed for convection to happen?
Fluid
Light
Fire
Electromagnetic waves
Fluids are ____?
liquids or gases
solid
elements
Warm air rises and the cool air sinks demonstrates this type of heat transfer.
convection
conduction
radiation
insulation
What type of heat transfer is seen in the picture?
Convection
Radiation
Conduction
What type of heat transfer is seen in the picture?
Radiation
Conduction
Convection
Which is more dense?
Cold Liquid
Hot liquid
Warm air is __________ dense than
cold air and rises creating
convection currents.
less
more
What is a thermal conductor?
Material that allow heat to move quickly through it.
Material that only allow heat to travel slowly through it.
What is a thermal insulator?
Material that only allow heat to travel slowly through it.
Material that allow heat to move quickly through it
What type of material makes the
best conductor?
Metal
Wood
Styrofoam
Food
What type of material makes the best insulators?
Styrofoam
Aluminum
Copper
Metal
Insulation is used in the walls of a building to ____.
keep thermal energy from moving through the walls
trap solar energy
conduct thermal energy
keep cold air from moving through the walls
Why do you want to live in a home with good insulation during the cold winter months?
If there is good insulation, the thermal energy will not be able to move easily from inside the warm home to the cool areas outside the building.
The insulation will keep you cool during winter.
If there is not good insulation, the air inside the home will become too hot.
A house with good insulation will keep the warm air in the attic.
The handle of a frying pan is often coated in rubber because rubber provides...
Heat insulation
A low melting point
Heat conduction
A nonstick surface
What insulation stops heat conducting through a roof of a building?
Loft insulation
Central heating
Cavity wall insulation
Draught excluder
Through which part of a house does most heat escape?
Walls
Roof
Windows
Doors
Conduction cannot happen in gases because the ____________
are too far apart?
Particles
Elements
Objects
Substances
Why is loft insulation so effective?
It traps air which helps to reduce heat lost from the home
It is itchy but reduces noise in the loft
The fibres do not burn easily if there is a fire
What surfaces are the best absorbers of infrared radiation?
Dark, matt
light, matt
light, shiny
dark, shiny
Which surfaces are best at reflecting radiation?
light, shiny
dark, matt
dark, shiny
light, matt
Metals conduct heat better than non-metals because
they have free electrons
they are shiny
Which heat transfer does not require particles and can occur in a vacuum.
E.g space.
Radiation
Conduction
Convection
