Transfer of

Energy

Forms of Energy

Potential

Chemical Mechanical

Kinetic

HeatRadiant

Electromagnetic (8th) Nuclear (8th)

Thermal/Heat Energy

• Motion of Atoms• Measured by change in

Temperature

• We produce heat energy.

Chemical Energy

• Chemical Energy is required to bond atoms together.

• And when bonds are broken, energy is released

Mechanical Energy

• When work is done to an object, it acquires energy.

• The energy it acquires is known as mechanical energy.

• Mechanical energy is motion.

Radiant Energy

• Energy that comes from the Sun.

Now we will discuss:Energy Transformations and how it allows us to do work

Transform – It might change shape

or form, but it still contains all the same

things!!

How we transform ENERGY!

Cells

Heat Mechanical

Stomach

Macromolecules

Chemical Energy

Food

Energy Transformation

Heat

Mechanical

Chemical

Transfer of Energy

For example, heat and the small molecules of water are the by-products of metabolism. Chemical Energy Mechanical & Heat Energy

Heat co2

H2O

+

What type of Energy is being transformed?

THE MOST

IMPORTANT TYPE

OF ENERGY

TRANSFORMATION

WHAT IS THE

ULTIMATE AND

MOST

IMPORTANT

SOURCE OF

ENERGY???

Where does almost ALL energy come

from?The Sun

APPLY 1. I sit around all day… what would be best to drink?2. I run marathons and am exhausted…what would be best to drink?

Transfer of

Energy