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# Energy In Motion

### Energy Study Guide- Lessons 1-10

What is a battery? A device that transforms chemical energy into electrical energy.
How can you prove an object has energy? An object has energy if it does work.
Describe how energy is transformed from an object to an electric motor. Chemical to Mechanical to Electrical.
What is energy transformation? Energy transformation is when energy is transferred into different forms.
How do you calculate averages? Add up your total data and dividing by the number of trials.
What is mass? The amount of matter in a body.
What is weight? The measure of the force of gravity on an object.
How are mass and weight related? The mass of a body determines how much it will accelerate whan unbalanced forces act on it.
What is friction? Friction is a force that opposes the motion of an object.
How can you change friction? You can change friction by changing surface type or weight.
What is one variable you could change that would not affect friction? Changing the surface area.
What is work as it is described by a scientist? Work defined by a scientist is the product of a force and the distance through which it acts.
What are three examples of work? Explain how they meet the requirements for work. Pulling a sled, lifting a box, pushing a block. Force is done on all three and they all move some dictance.
What are the units of measure used for? Weight: Mass: Force: Distance: Work: Power: Weight: Grams/Kilograms Mass: Grams/Kilograms Force: Newtons Distance: Meters Work: Newton-Meters/Joules Power: Watts
Evan moved a statue with a constant force of 10N. He moved the statue 10 meters. How much work did he do each day? 100 Newton-Meters.
Sandra lifted a 25N bike 10m up some stairs. How much work did she do each day? 250 Newton-Meters.
Joe pushes at a steady pace with a force of 8.0N on a box. He moves thebox 3.0m in 5.0s. What is his power output? 0.04 Watts.
Created by: katied111