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WorksheetsEnergy Transfer and Conservation
Total questions: 23
Worksheet time: 1hrs 9mins
Can energy be created or destroyed?
yes
no
only created, not destroyed
only destroyed, not created
Can Energy be converted between Kinetic Energy and Potential Energy?
Yes
No
Only Sometimes
When energy is "lost" to efficiency where does it usually go?
Heat and Sound
Gravitational Potential Energy
Kinetic Energy
It is destroyed
What is Sound?
The Average Kinetic Energy of the particles of a substance or Object
The Potential Energy of an Object
A value based on the mass of an Object
Vibrations and waves through air molecules
What is Heat?
The Average Kinetic Energy of the particles of a substance or Object
The Potential Energy of an Object
A value based on the mass of an Object
Vibrations and waves through air molecules
Can heat flow between two objects that have the same temperature?
Yes
No
Temperature is the measure of the average kinetic energy of the molecules that make up a substance/object
True
False
When everything in a system is at the same temperature, we call this
Total Kinetic Energy
Thermal Radiation
Thermal Equilibrium
Potential Energy
Thermal Radiation is...
The flow of energy through empty space or air
The flow of energy through molecules that are touching each other
The flow of energy carried by the swirling/currents in a fluid
Do two objects need to be touching to transfer thermal energy through thermal radiation.
Yes
No
How does the sun heat up the earth from so far away?
Thermal Radiation
Thermal Conductivity
Thermal Convection
The thing that mostly carries thermal radiation is?
gravity
Infrared Light
sound waves
air currents
In terms of Infrared Light, as an object heats up...
more thermal radiation is produced
less thermal radiation is produced
Thermal Conduction is...
The flow of energy through empty space or air
The flow of energy through molecules that are touching each other
The flow of energy carried by the swirling/currents in a fluid
Do two objects need to be touching to transfer thermal energy through thermal conduction?
yes
no
Which is best at conducting thermal energy
Metal
Wood
Plastic
Air
Objects that are bad at conducting energy are called insulators
True
False
Why are cooking pans made of metal?
metal conducts heat well and spreads it out evenly
metals are poor conductors of heat and keep food from burning
Metals are insulators and keep the heat from spreading out too much
Why does the handle on a frying pan hot, even through the heat is only being applied to the bottom of the pan
Thermal Conduction
Thermal Radiation
Thermal Convection
Thermal Convection is...
The flow of energy through empty space or air
The flow of energy through molecules that are touching each other
The flow of energy carried by the swirling/currents in a fluid
What is the main cause of thermal convection?
Uneven Heating
Even heating
the mass of a substance
Thermal convection is when uneven heating causes a fluid like air or water to begin to swirl and mix up
True
False
Thermal convection is...
the cause of weather on earth
the reason sunlight feels warm
the reason the handle on a frying pan is hot
