Vocabulary
The ability to do work or cause change
What is Energy
Choose one person to Show their work on the white board:
Suppose a boy is pulling a 10kg wagon at a speed of 1 m/s. Solve its kinetic energy with the correct units
What is 5 joules
The two factors that affect Kinetic energy
What are mass and speed(velocity)
Energy stored in the nucleus to create fission or fusion
What is nuclear
two types of energy transformations
Which are single and multiple transformations
When you do work on an object, some of your energy is _________________ to that object
What is transferred
the formula for power
What is Energy Transferred divided by time
Energy that an object has due to its motion
What is kinetic energy
a 3.5 kg ball is resting at 9 meters. what is its potential energy
what is 308.7 j or 309 j
Two basic types of energy
Which are kinetic and potential
The reason thermal energy is associated with particles of an object
What is a single transformation?
A change in an object's speed has a(n) ___________ effect on its kinetic energy than a change in its mass
What is greater
the formula for potential energy
what is mass times gravity times height
Kinetic or Potential energy associated with the motion or position of an object
What is Mechanical Energy
Choose one person to Show their work on the white board:
Suppose a book has a weight of 10n and the book is lifted two 2 meters off the ground. the gravitational potential energy is
What is 20 joules
two types of potential energy
What is Gravitational potential and elastic potential
The temperature in celsius where all particles will cease movement
what is -273 celsius
How is driving a car a multiple transformation (give short detail for each step)
What is Chemical energy -> Thermal -> Mechanical -> Kinetic
What is mass
the formula for kinetic energy
What is (1/2 x mass x velocity squared)
The long formula to find mechanical energy
1/2 mass velocity squared plus mass times gravity times height
Choose one person to Show their work on the white board:
A 1.8 kg book has been dropped from the top of the football stadium. Its speed is 4.8 m/s when it is 2.9 meters above the ground. What is its total mechanical energy? include your units
INCLUDE UNITS
What is 71.9 Joules or 72 Joules
Energy and work are measured in
joules
Explain how the sun is an example of fusion using hydrogen as an example and using activation energy in your response
What is hydrogen combining to create helium (because the sun is providing activation energy)
What are 3 reasons that kinetic and potential energy is the most common energy transformation
Which are: 1. Gravity is constantly at work 2. Motion is everywhere 3. It's present in many forms of energy
To maintain your nody temperature, your body converts chemical potential energy into ______ energy
What is thermal
the units for all energy
What is Joules
A change from one form of energy to another, also called energy conversion
Choose one person to Show their work on the white board:
A 28 kg child on a swing is traveling at 4.2 m/s and has 315 J of total mechanical energy. What is his gravitational potential energy? How high is he above the ground?
INCLUDE UNITS
What is 68 GPE and 0.3 m
Doubling the speed will affect kinetic energy by
(remember speed/velocity is squared)
What is quadrupling it
List all the types of energy in a toaster oven(4 kinds)
Which are: mechanical, electrical, thermal and electromagnetic energies
Explain the steps of energy transformation for Hydroelectric Dam Generating Electricity
Which are 1. GPE -> KE -> ME -> Electrical Energy
As water runs over a waterfall, what potential energy is converted into ______ energy
Which are Gravitational Potential energy and Kinetic
the constant for gravity
What is 9.8m/s2
The rule that energy cannot be created or destroyed
What is the law of conservation of energy
Choose one person to Show their work on the white board:
A 3.2 kg ball that is moving straight upward has 17 J of kinetic energy and its total mechanical energy is 25 J.
Find the gravitational potential energy of the ball.
What is its height above the ground?
What is the speed of the ball?
NEED UNITS
What is 8j, 0.3m, and 3.3 m/s
A stretched out rubberband has ________ energy but a mountain climber at the peak has ______ energy
What is elastic potential energy and gravitational potential energy
Which are nuclear, thermal, electrical, electromagnetic, and chemical
The most basic concept in energy science
What is Single Transformation
In a machine, work output is less than work input because some energy is converted into ______ energy
What is thermal
The formula for mechanical energy
(1/2 x m x v2) + (mgh)