Study Guide CCA week 12 - Key
Vocabulary to know: (define on separate paper & give an example of each)
Electrical Energy
Electromagnetic
Energy
Energy
Transformation
Energy carried by
electricity – moving
electrons
Ex: Toaster, Fan, Anything
that plugs into an electrical
outlet.
A form of energy that
travels through empty
space (vacuum)
Ex. sunlight
A change from one form of
energy to another
Ex: Eating an apple
(Chemical) changing to
running (mechanical)
Solar Energy
Kinetic Energy
Convection
Energy that comes from
the sun.
Ex: sunlight
Energy of motion
Ex: move, kick, eat,
Thermal energy being
moved by air or liquid
currents.
Ex: Boiling Macaroni, Space
Heater
Thermal Energy
Potential Energy
Conduction
Energy in the form of heat.
Caused by the movement
of particles.
Ex: Oven cooking, Stove
cooking, Toaster cooking,
Camp Fire burning
Stored Energy
Ex: pencil on desk, cat
asleep on a couch
Heat transfer by direct
contact
Ex: walking on hot sand,
touching hot spoon
Chemical Energy
Light energy
Radiation
Potential energy available
for release in a chemical
reaction.
Ex: Battery, Candle, Food,
wood, fuel
Radiant energy that our
eyes can see from the
visible part of the
electromagnetic spectrum.
Ex: light bulbs, televisions,
lamps, computer monitors
Energy transmitted by
electromagnetic waves.
Ex: feel heat from stove
w/o touching, feel heat
from the Sun
Mechanical Energy
Energy produced by a
machine or moving part
Ex: Moving Water in a
dam; Fan Blades moving;
Person running
.
1. Explain the Law of Conservation of Energy:
Matter is neither created nor destroyed, it can only change form.
2. Explain Thermal Energy Transfer
Thermal energy transfer is the process where heat moves from one body
or substance to another by radiation, conduction, convection, or a
combination of these. The energy flows from Hot to Cold.
3. Draw, explain and give an example of Conduction, Convection,
and Radiatio
Conduction
Convection
Radiation
Radiation
Convection
Conduction like Duct Tape, must touch
Convection like blowing on your hands, moves through air or liquid current
Conduction
Radiation “rad sufer dude” nothing touches it, electromagnetic waves transfer heat. Feel heat from
fire/stove/sun
4. Draw a roller coaster. & Label:
a. Greatest Potential
d. Greatest Kinetic
b. Increasing Kinetic
e. Increasing Potential
c. Decreasing Kinetic
f. Decreasing Potential
5. Describe the energy transformations in:
a. A fan
e. Battery flashlight
Electric to mechanical
b.
A pencil sharpener
Chemical to Electrical to light
f. Microwave
Mechanical to sound
Electric to radiant/light / thermal
c.
g. An overhead light
A computer
Electric to light/ sound/ thermal
d.
A fire
Chemical to thermal / light
Electric to light
h. A plant
Radiant / light to chemical
6. Define: Physical Change: A change that alters the form or appearance of
a substance but does not change it into a new substance
7. Define Chemical Change: A change in matter that produces a new
substance
8. List all evidence that a chemical change has occurred. Rusting, digesting
food, Spoiling, Burning, Corroding, Decomposing, Exploding, Frying,
Precipitate forming, Bubbles, Gas being released
9. List 5 examples of Kinetic Energy. Kicking a ball, swinging a bat, running,
eating, car moving, typing, writing, talking, chemical reaction, swinging,
climbing, (any kind of movement)
10. List 5 examples of Potential Energy. Ball in a field, food in the ‘fridge,
rock on the table, pencil on a desk, fruit on a shelf, bat on the floor,
sitting on a couch, car parked & off, chemical in a bottle alone, top of a
swing, top of the roller coaster, before you swing the bat, before you
start the car, (anything not moving or waiting to move or at the top of
the movement)
11. On a swing, when would the Potential and Kinetic Energy be equal?
When they are between the
very top and the very
bottom on both sides.
Past topics you should know well:
How to write a hypothesis from a problem/question.
Do plants grow bigger with regular or salt water?
If regular and salt water are added to different plants, then the one with
regular water will grow bigger.
DRY / MIX and how to graph each.
DRY = Dependent/Responding Variable graph on the y-axis
MIX = Manipulated/Independent Variable graph on the x-axis
Manipulated / Responding Variable and how to identify each in a lab.
Do plants grow higher with regular or salt water?
If regular and salt water are added to different plants, then the one with
regular water will grow higher.
Manipulated variable is what you are testing. What you control and can
change.
Responding variable is the response to the test. What you get at the end of
the experiment. Your results.