Energy
True or false. The amount of energy you end with can be different than the amount of energy you started with
False
Where is there the moat potential energy on a roller coaster?
The top
Where is there there the most kinetic energy on a roller coaster?
At the bottom/ when it moves the fastest
This is the type of heat transfer that needs direct contact
Conduction
Energy is never created or destroyed. It is only _____
Transformed
Energy is the ability to ______
do work/ cause change
Potential energy is energy that is being _____
Stored
Kinetic energy is the energy of ______
Movement
Convection
True or false. Nuclear power is renewable
False
What are the units for energy?
Joules
Name 3 types of potential energy
Gravitational, elastic, nuclear, chemical
Name 3 types of kinetic energy
Thermal, motion, radiant, sound, electrical,
When air is heated up from the pavement, what type of heat transfer is this?
Conduction
With energy bar charts, the amount of joules in the before chart must be _____ compared to the after
Equal
Where is the main source of energy for everything on earth?
The sun
Find the potential energy of an object that has 12 kg of mass and is 57 meters in the air (use 10 m/s^2 for gravity)
6,840 J
Find the kinetic energy of an object that is 23 kg and moving at a velocity of 16 m/s
2,994 J
Heat transfer is dealing with DIRECTLY with what type of kinetic energy?
Thermal
If we heated a thermometer by fire while it was on top of aluminum and it reached 100 degrees in 10 seconds, how long do you think it would take to heat up when on top of wood
More than 10 seconds
What states that energy can never be destroyed or created?
The law of conservation of energy
Name 3 examples of elastic energy
Rubber band, spring, muscles, etc
Find the velocity of an object that is 61 kg and has 1,071 J of kinetic energy
5.9 m/s
When someone is roasting a marshmallow over a fire, name me examples of the 3 types of heat transfer we have talked about
Conduction- Marshmallow heating up the stick with direct contact
Convection- hot air rising
Radiation- fire roasting marshmallow
If the total amount of electricity we produce goes up, the the total of amount of what in the Earth will increase with it? (there are two answers I will accept for this)
Pollution/heat