Energy
Kinetic & Potential Energy
Forms of Energy
Calculating Work and Power
Energy Conversions
100
The ability to do work or cause change
What is energy?
100
Energy of motion
What is kinetic energy?
100
These are the six forms of energy.
What are electrical, nuclear, electromagnetic, chemical, thermal, and mechanical?
100
force x distance
What is the formula to calculate work?
100
Food is eaten before playing basketball.
What is chemical to mechanical?
200
Energy stored in a slingshot
What is elastic potential energy? OR What is potential energy?
200
Stored energy
What is potential energy?
200
Chemical & Nuclear
What are forms of potential energy?
200
work divided by time
What is power?
200
When a battery is used to power a light bulb.
What is chemical to electrical?
300
Energy can only be converted from one form to another; it cannot be destroyed or created.
What is The Law of Conservation of Energy?
300
Kind of energy that increases as an object moves faster and faster.
What is kinetic energy?
300
The moving particles involved in electrical energy.
What are electrons?
300
Amount of work done when 4 Newtons of force is applied to a 400 kilogram object
What is no work?
300
A person running on a treadmill starts to get warm and sweaty.
What is mechanical to thermal?
400
The unit of energy.
What is the joule?
400
The kind of energy that increases with mass.
What is both potential and kinetic energy?
400
Energy found in atomic bonds.
What is chemical energy?
400
Amount of power required for Salma to push a 50 N box 5 meters in 10 seconds.
What is 25 watts? P = f x d /t = (50 N x 5 m) / 10 s = (250 Nm) / 10 s = 25 Watts
400
A plant uses energy from the sun for the nutrients to grow.
What is electromagnetic -> chemical -> mechanical?
500
The height of a 3-kg apple hanging from a tree with 90 joules of potential energy.
What is 3.06 meters? Or what is 3.0 meters ? PE = mgh PE/mg = h 90 J/(3 kg*9.8m/s2) = 3.06 meters OR 90 J/(3 kg*10m/s2) = 3.0 meters
500
The kinetic energy of a 50-kg man running with a velocity of 8 m/s.
What is 1600 joules? KE = .5(50 kg)(8m/s)^2 = 1600 joules
500
Energy from the motion of atoms inside particles.
What is thermal energy?
500
Amount of time it takes to do 500 Joules of work using 5 watts of power
What is 100 seconds?
500
My plugged in microwave produces microwaves that vibrate food particles to heat them.
What is electrical -> electromagnetic -> mechanical -> thermal?
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