Energy is measured in
Joules
How does the bicycle's kinetic energy change when the bicycle slows down?
KE goes down as well
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.
What energy transformation occurs when you plug in a mixer?
electrical --> kinetic (mechanical)
Where is Ms. Cveckova from?
Slovakia
What is Law of Conservation of Energy?
Energy cannot be created or destroyed only transferred.
Gravitational potential energy depends on
mass and height of the object
What is temperature?
Average kinetic energy of particles in an object.
What energy transfer happens when light enables plant to grow?
Radiant --> chemical
First name of Ms. Robinson is?
Maria
What is potential energy?
Stored energy
Can moving objects have potential energy? If yes, give an example.
Yes. E.g. skater in the middle of a ramp.
What magnitude (number) and unit do we assign to absolute zero temperature?
0 Kelvin
What energy transformation happens when you are burning wood?
Chemical energy -->radiant and thermal energy
How many students in Team 8B?
94
What is energy?
a) ability to cause change
b) ability to do work
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
Transfer of thermal energy is called
heat
What energy transfer occurs when you are sweating?
chemical energy --> thermal energy
BONUS POINT
BONUS POINT
Is this boy doing work? Why?
Yes, because he applies force over certain distance.
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
Heat is transferred from one object to another object until _ reached?
thermal equilibrium
What energy transformation occurs when you apply brakes on the bike?
mechanical (kinetic) energy --> Thermal
Number of residents in Sharon?
17,612 (year 2010)