Force, Motion and Energy
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Transcript of Force, Motion and Energy
Force, Motion and EnergyWhat is the relationship?
EPISD Middle School Science Standards Based Curriculum 2013-2014
Matter and Energy
Matter is anything that takes up space.
Matter can also be changed into energy.
Force is a push or pull caused by a transfer of energy.
EPISD Middle School Science Standards Based Curriculum 2013-2014
Matter and Energy
• Energy is the ability to do work.
• Force x Distance = Work
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Forms of Energy
There are 2 forms of energy. Potential and Kinetic
• Potential energy is stored energy.
• Kinetic energy involves motion.
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EPISD Middle School Science Standards Based Curriculum 2013-2014
Potential and Kinetic Energy
Consider a roller coaster. • At the top, it has potential energy. The energy is
stored just as the energy in the rubber band. It is energy waiting to be used for motion.
• As the roller coaster moves toward the bottom, kinetic energy increases along with the roller coaster’s speed.
EPISD Middle School Science Standards Based Curriculum 2013-2014
Energy Transfer in a Roller Coaster
EPISD Middle School Science Standards Based Curriculum 2013-2014
Potential and Kinetic Energy
Now consider a human being• Potential energy is stored in
food.• Chemical change produces heat
energy.• Food is fuel that gives us
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EPISD Middle School Science Standards Based Curriculum 2013-2014
Energy in Food
A calorie is a measure of the amount of energy. In food, energy is measured in thousands of calories or kilocalories.
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EPISD Middle School Science Standards Based Curriculum 2013-2014
Transferring Energy in Food
• Food is digested and stored in our bodies as potential energy.
• This potential energy can be transformed into kinetic energy as our bodies move and exercise.
When you exercise, you get hot? What do you think is happening?
EPISD Middle School Science Standards Based Curriculum 2013-2014
The Sun is a Source of Energy
The sun’s energy becomes chemical energy and is stored in plants as potential
energy.
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EPISD Middle School Science Standards Based Curriculum 2013-2014
Forces in Living Things
Seedling emergenceGeotropismPhototropism
Turgor pressure
EPISD Middle School Science Standards Based Curriculum 2013-2014
Forces in Living Things
The force of blood on the walls of arteries is known as blood pressure
The human body forces food throughthe digestive system to absorb nutrientsUsed for energy to do work.
EPISD Middle School Science Standards Based Curriculum 2013-2014