Work
Forms of Energy
Energy Transforms
Energy Conserved
Energy Spiral Review
100
Has work been done when Mr. Sikes uses energy to push a brick wall?
No! Not unless the wall moves.
No changes have been made, even though Mr. Sikes may tire himself out.
100
The type of energy that an electric drill has as its purpose
Mechanical energy! (The drill spins!)
-electrical energy turns it on, but it not the end goal
100
Which transforms chemical energy into thermal energy?
A - starting a fire with a magnifying glass
B - burning coal
C - a battery warming up from use
D - plugging in a toaster
B - The chemical energy from coal is released as heat when you try to burn it.
100
What happens to the mechanical energy of a bouncy ball as it slowly bounces lower and lower until it stops moving? Explain.
The energy is transferring mostly to the surface that it hits, each time giving some of its mechanical energy away until the ball has no more energy to bounce. Some is also transferred to the air.
100
The source of energy that powers the water cycle (3rd grade review)
The Sun (Radiant energy)
200
When water boils, thermal energy does work. When a puddle evaporates, has thermal energy done work?
No! Water can evaporate at cold temperatures. Thermal energy can speed up the process but is not responsible for the process.
200
The type of energy output from a microphone
Sound energy!
-electrical energy powers the mic and transforms into sound energy
200
This device turns _______ energy into ______ energy.
electrical energy --> thermal energy
200
True or false: As sound energy bounces around and echoes in a room, the energy is slowly destroyed until the sound is no longer heard.
False! The energy may convert into heat or mechanical energy, but would never be destroyed.
200
From which layer of the Earth does the thermal energy come from that creates most metamorphic rocks?
The Earth's crust
300
A students lifts a model car from the ground to up in the air. Has energy done work in this exampl
e?
Yes! Energy created a change in an object's position, so work had to be done.
300
The type of energy produced by an oven
Thermal energy
300
Fill in the energy types in the blanks:
A hot air balloon uses __________ energy and transforms it into ____________ energy.
Thermal energy heats up the air in the balloon. The hot air rises and pushes on the balloon to give it mechanical energy to move.
300
Explain how energy is conserved when ice cools down your warm drink! Where did the thermal energy from the soda go?!
The thermal energy left the warmer soda and was absorbed by the ice. The energy was not destroyed, but did warm up the ice and leave the soda cooler as a result.
300
___________ energy transforms into ____________ energy to get tectonic plates to move.
Thermal energy -> Mechanical energy
400
A heavy box was leaning and then fell off a shelf. Has energy done work in this example?
Yes! The potential energy in the box transformed into mechanical energy to move the box. Once the box moved, work had been done.
400
The output energy of a solar panel is this type of energy
Electrical!
The solar panel transforms energy from radiant-> electrical
400
Write the letters of each scenario that transforms an energy form into mechanical energy:
A- plugging in a fan
B- plugging in a lamp
C- Placing baking soda and vinegar into a bottle
D- A Chromebook turning on.
A & C. Objects move in both of these examples.
400
True or false: Because energy is conserved, a spinning top can spin forever if you launch it fast enough.
False! A top would slowly give energy to the air or surface it is on because of friction. Eventually it would come to a stop.
400
True or false: Radiant energy is always visible since it is light energy.
False! There are many types of radiant energy that humans cannot see. Examples: X-rays, UV light, radio waves, microwaves. The diagram below shows how little humans can actually see: 
500
Mr. Sikes is holding a weight in the air above his head. Is he currently using energy to do work?
No! Since the object is staying still, he may get tired but no work is being done on the object.
500
This type of energy best describes how automatic doors sense people are nearby and to open for them.
Radiant energy! When a person interrupts a laser, the doors begin opening.
- Yes they are powered by electricity but the best answer is radiant energy due to the sensors involved (usually microwave rays
500
A camper built a large mirror in a cone shape. The goal is to turn __________ energy into _________ energy. 
Radiant Energy (sunlight) into Thermal Energy (to cook food)
500
A tree dies and falls down in a forest. How does the energy in the tree get transformed since it is not destroyed? Explain.
Many answers:
-The tree falling and hitting the ground passes mechanical energy to the things that it hits
-Decomposers (like termites) can eat the tree for food (chemical energy)
- People may burn the wood to transform into thermal and radiant energy
500
In a food web, the type of organisms responsible for converting radiant energy into chemical energy are ____________________________
Producers turn sunlight into food (normally glucose)