Forms of Energy
Amounts of Energy
Grab Bag
Thermal Kinetic Energy
Transfer and Transformation
100
What type of energy refers to stored energy?
potential energy
100
Which has more kinetic energy, a bowling ball going 20 mph or a car going 20 mph?
Car --> more mass
100
What do we call a set of interacting parts that work together?
System
100
Which direction will thermal kinetic energy always transfer in?
hint: one object is hot, the other is cold
hot --> cold
100
Kinetic energy always transfers in which direction during a collision?
hint: one object has more energy, the other has less
More-->Less
200
What type of energy is due to the motion of an object?
kinetic energy
200
Which has more gravitational potential energy, a rollercoaster car at the bottom of the hill or a car at the top of a hill?
Top --> further off of the ground
200
Which type of thermal kinetic energy transfer requires two objects to be touching?
hint: pot on a stove
Conduction
200
When will the transfer of thermal kinetic energy between two objects stop?
When both objects are the same temperature
When both objects have the same average energy levels
200
Which will have less thermal kinetic energy, you wearing a black t-shirt or you wearing a white t-shirt?
you wearing a white t-shirt
300
What type of energy travels through space in waves?
hint: light
electromagnetic energy
300
Which has more thermal kinetic energy, a cup of boiling water or a lake of water at the ambient temperature?
Lake --> more particles = more energy
300
Which type of thermal kinetic energy transfer can only occur in liquids and gases?
hint: boiling water
Convection
300
What do we call the measure of the average kinetic energy of all particles in an object?
Temperature
300
What do we call the rate at which an object absorbs and transfers thermal kinetic energy?
Thermal conductivity
400
Which type of energy is caused by vibrations?
sound energy
400
Which part of this mouse has the highest thermal kinetic energy reading?
Head --> Eyes
400
Which type of thermal kinetic energy transfer does not require touching and involves energy traveling through space until it hits something?
Radiation
400
What do we call the measure of total kinetic energy of all particles in an object?
Thermal energy
400
What is one example of an energy transfer in a rollercoaster?
Outlet --> engine --> lift --> cars --> track + air
500
Which type of energy describes an object's ability to do work?
mechanical energy
500
What two things do you need to calculate kinetic energy?
Hint: ke= 1/2MV2
Mass and speed
500
Energy efficiency is a ratio between the amount of energy put into a system and the percentage of which it is able to use.
Name an example of waste energy that makes your smartphone less energy efficient.
thermal kinetic energy
Sound kinetic energy
500
What do we call the transfer of thermal kinetic energy between two objects of different temperatures?
Heat
500
What is one example of an energy transformation in a rollercoaster?
electrical kinetic --> mechanical --> gravitational potential --> kinetic --> thermal kinetic + sound kinetic