Download Note-taking worksheet on Energy

Note-taking worksheet on Energy
Section One ~ Nature of Energy
Energy is the ability to cause ______________________
1.
Kinetic energy is energy in the form of ______________________
a. The amount of kinetic energy an object has depends on its ______________
and its ___________________.
b. Kinetic energy’s formula is ____________________.
c. _______________ is the SI unit used to measure energy.
2.
3.
Potential energy is the energy stored in the _____________ of an object, giving it
the potential to cause change.
Elastic potential energy is stored by thing that are ______________ or
_____________________.
4.
Chemical potential energy is energy stored in ________________________
between atoms or molecules.
5.
Gravitational potential energy is energy that is stored by energy that is
____________________________________________.
a. the amount of PGE an object has depends on its ____________________,
the acceleration due to ______________, and its ____________________.
b. GPE is mass in _________ times __________m/s/s times height in ______.
Section Two ~ Conservation of Energy. Energy conversions is the changing from one
_____________ to another.
1.
Fuels store energy in the form of _____________________ energy.
2.
___________________ energy is the total amount of potential and kinetic energy
in a system.
3.
The law of conservation of energy states that energy may change from one
form to another, but the _____________________ of energy does not change.
a. Example – As a swing moves back and forth, its energy continually converts
from __________________ to ________________ and back again.
b. Example – If the energy of the swing decreases, then the energy of some other
object must _________________ by an equal amount.
c. Example – Friction may convert some of the mechanical energy into _______
energy.
4.
When converting _________ into energy. You must thing of _______ as energy
when discussing nuclear reactions. The total amount of mass and energy is
conserved.
a. Nuclear _________________ is when two nuclei are fused together. Takes
place in the Sun.
b. Nuclear fission is when two nuclei are ______________________.
5.
__________________________________ energy from food that is stored in your
body is used in fuel the processes that keep you alive.
The food _____________________________ is used to measure how much
energy you get from various foods. One Calorie is equivalent to about 4,180 J.
1.
What is the GPE of a 3.4-kilogram object, held 6.7 meters above the Earth?
2.
What is the PGE of a 1,349.4-kilogram satellite, 300,000 meters (300 km), above
a planet with the gravity acceleration of 3.7 meters/second/second?
3.
What is the Kinetic Energy of a 284.5-kilogram object, moving at 39.9 meters per
second?
4.
What is the Kinetic Energy of an 867.8-gram object, moving at 29.6 meters per
second?
5.
A pendulum is at the top of its swing, and the “Bob” is 1.5 meters above the floor.
When the pendulum is at the bottom of its swing, the “Bob” will be an insignificant
distance from the floor. What will be the speed (velocity) of the “Bob” at the bottom of
the pendulum’s swing?