Basic Energy Concepts
Kinetic and Potential Energy
Thermal Energy
Energy Transfer
Miscellaneous
100
Energy is measured in
Joules
100
How does the bicycle's kinetic energy change when the bicycle slows down?
KE goes down as well
100
True or False? Heat always flows from the colder object to the warmer object.
False.
Heat always flows from the warmer object to the cooler object.
100
What energy transformation occurs when you plug in a mixer?
electrical --> kinetic (mechanical)
100
Where is Ms. Cveckova from?
Slovakia
200
What is Law of Conservation of Energy?
Energy cannot be created or destroyed only transferred.
200
Gravitational potential energy depends on
mass and height of the object
200
What is temperature?
Average kinetic energy of particles in an object.
200
What energy transfer happens when light enables plant to grow?
Radiant --> chemical
200
First name of Ms. Robinson is?
Maria
300
What is potential energy?
Stored energy
300
Can moving objects have potential energy? If yes, give an example.
Yes. E.g. skater in the middle of a ramp.
300
What magnitude (number) and unit do we assign to absolute zero temperature?
0 Kelvin
300
What energy transformation happens when you are burning wood?
Chemical energy -->radiant and thermal energy
300
How many students in Team 8B?
94
400
What is energy?
a) ability to cause change
b) ability to do work
400
Describe kinetic and potential energy of the cart in point 1. and 2.
https://docs.google.com/document/d/14P_a-wtLmkab2dPvKa1jVZ-jzftieZiT5DjvvBtGbqE/edit?usp=sharing
1. Top of the hill: maximum PE, KE=0
2. Bottom of the hill: maximum KE, PE= 0
400
Transfer of thermal energy is called
heat
400
What energy transfer occurs when you are sweating?
chemical energy --> thermal energy
400
BONUS POINT
BONUS POINT
500
Is this boy doing work? Why?
Yes, because he applies force over certain distance.
500
Describe KE and PE of the cart at point 3.
https://docs.google.com/document/d/14P_a-wtLmkab2dPvKa1jVZ-jzftieZiT5DjvvBtGbqE/edit?usp=sharing
KE > PE
Neither is maximum or minimum in the system
500
Heat is transferred from one object to another object until _ reached?
thermal equilibrium
500
What energy transformation occurs when you apply brakes on the bike?
mechanical (kinetic) energy --> Thermal
500
Number of residents in Sharon?
17,612 (year 2010)