WorksheetsBraxton chapter 2 energy conversions
Total questions: 21
Worksheet time: 14mins
The function of a radio is to (a) music.
Are LED lights more or Less efficient than light bulbs?
(a)
What is the input energy for an electrical lamp?
LED Lights WASTE MORE or LESS energy being converted into thermal energy
more
less
same
LED lights are (a) efficient than light bulbs because they waste less energy being converted to thermal energy; so more energy can be used for light.
What is the output energy for an electrical motor?
Motion energy
What is the output energy for an electrical fan?
Motion Energy
What is the output energy for an electrical STOVE?
Motion Energy
During storms, towns may experience blackouts because something goes wrong with their electrical system. What is the best evidence that would support the claim that something went wrong with their electrical system?
After the blackout, all of the lights came back on.
The storm knocked down all of the power lines.
The electrical grid connected to the skyscraper fails to work properly.
The mayor of the town turns the electricity off to save energy.
The picture shows energy converters used in homes every day. Which statement describes the relationship between all of the converters pictured?
They all have an output energy of motion.
Electrical energy is the input energy for all the devices.
Sound energy is converted to electrical energy in all the devices.
Thermal energy is the input energy for all the devices.
What is true of all the electrical devices shown to the left?
They all Change energy forms through the electric device
They all KEEP the same ENERGY through the electric device.
4th grade is hosting its annual Science Fair. Braxton decides to make a simple electrical system. He names his electrical system the Super Solar Electric Flywheel. The parts for the system are the sun, solar panel, motor, and the flywheel. What part of the system is the electrical converter for the system?
When a device is converting one type of energy to another type, what is another word that means the same as converting?
applying
bonding
changing
keeping
In the following picture, what is the energy source?
(a)
Energy can change forms when it goes through an________________
electrical device
model
engineer
train
An electric device ALWAYS has an INPUT of _________ energy
thermal
sound
light
electrical
motion
Electrical devices can convert electrical energy into which types of energy? pick 4
thermal(stove)
sound(speaker)
light (LED LIGHT)
motion (motor)
electrical energy(blow dryer)
An electric stove converts ________ energy to -> ________energy this makes the stove HOT!
Electrical
sound
light
thermal
A guitar converts ________ energy(strumming) to -> ________energy.
motion
sound
light
thermal
Some Electrical devices can convert ELECTRICAL ENERGY to-> THERMAL and SOUND Energy; this means they become hot and also make sounds. Choose 4 devices that can do this
acoustic guitar
hair dryer
electric stove
electric guitar
microwave
Engineers ALWAYS: PICK 3
Discuss solutions with one another
Argue for one solution over others based on how well it meets criteria
Argue for one answer to get revenge on kinsley criteria
use criteria to think about and to test how well something solves a problem
