Quiet on the Creek
As kinetic energy increase what happens to thermal energy?
Thermal energy increases
True or false. A ball has its most potential energy before it is dropped
True
Is a white or black solar heater better at absorbing radiant energy?
black
What is the the thing in an experiment that always stays the same?
The Control Variable
What is the definition of kinetic energy
energy of motion
When popcorn kernels touch what type of thermal energy transfer it this?
conduction
If you are dropping a ball when does it have the most kinetic energy?
right before it hits the ground
Energy from the sun is called what? A solar pool heater absorbs this type of energy.
radiant energy or radiation
What is the thing in the experiment that the experiment changes in order to test?
The Independent Variable
What is the definition of potential energy
stored energy
As popcorn heats up what happens to the molecules in the popcorn?
they move faster
If you drop a ball at 5 feet above the ground and another ball at 10 feet above the ground which will bounce higher?
10ft
A solar heater for a pool takes energy from the sun and transfers it to where?
the water in the pool
What is the thing in the the experiment that is observed or measured?
The Dependent Variable
What is the definition of conduction?
Energy transfer through direct contact of objects touching
While popping popcorn kernels often collide and share thermal energy through conduction. Lets pretend that they both collide and then stop moving. What happens to their kinetic energy as the kernels go from moving to staying still.
Their kinetic energy decreases as they stop moving
When you drop a ball why does it stop bouncing?
The ball loses all of its energy and transfers its energy to the environment
should a solar heater us 50ft or 100ft of dark tubing in order to heat up the fastest?
100ft
Mass and Energy Transfer have what kind of relationship? (describe and define)
As mass increases energy transfer decreases and vice versa. This is called Inversely Proportional or Inverse Correlation.
What is the definition of radiation?
Thermal energy transferred through heat (electromagnetic) waves (such as the sun)
As you cook popcorn on the stove how does energy transfer? From _______ to __________ to _________
From the fire to pan
From the pan to oil
From the oil to the popcorn kernels
As you drop a ball what type of energy is it losing?
As you drop a ball what type of energy is it gaining?
losing PE
gaining KE
If you want the pool to be at 90 degrees what should you do with the solar water heater if the pool temperature is 89 degrees? Once the temperature gets to 91 degrees?
Turn it on when it gets to 89 degrees and turn it off when it gets to 91 dgrees.
How is Specific Heat Capacity measured?
By how many joules of energy it requires to warm 1kg of material by 1 degree Celsius
What is the definition of convection
The transfer of energy in a fluid by movement of the fluid itself