Energy Transfers Revised
Which of these objects are attracted to a magnet?
paper clip, iron nail, aluminum pop can, aluminum foil, copper penny, magnet, silver colored cloth, magnet, plastic pen
paper clip, iron nail, magnet
How would you design an investigatyion to test to see if an object was magnetic?
Hold the object next to a magnet. Observe to see if the object is attracted. Record the results in a data table.
North poles are ___________ to the South poles of a magnet.
North poles are __________ to the North poles of a magnet.
attracted (opposites come together)
repelled (same poles push away)
With the help of a compas, travelers can .....
find the direction North.
This pictures shows a compelte circuit. Describe how to make a complete circuit that will light the bulb and why it works.
What are the three parts of a complete circuit shown in the photo.
Source - batter
Path - wire
Load - lightbulb
Give an example of how electrical energy is used in your home to transfer electrical energy into mechanical energy (motion)?
Give an example of how electrical energy is used in your home to transfer electrical energy into heat energy?
Microwave, toaster, heater
Give an example of how electrical energy is used in your home to transfer electrical energy into sound energy?
Alexa, radio, television, alarm
Energy is a concept that describes:
change or work
Which of these items will be attracted to a magnet:
steel paper clip, copper coin, aluminum can, rubber band
steel paper clip
Rachel tested forks to see if all forks are attracted to magnets. She places a magnet next to a plastic fork and a stell fork. What would you expect Rachel to observe?
Only the stell fork is attracted to the magnet.
Where is a magnet the strongest?
At the poles.
What investigation we conducted illustrates the magnetic effect in an electrical circuit?
To keep his hands warm on a cold day, Isaiah rubbed his hands together. How did the rubbing help keep his hands warm?
Heat is produced through the friction of rubbing the hands against eachother.
What materials will work as a switch?
All metals, because all metals conduct electricity. For example, aluminum foil, a penny, a metal spoon, and a paperclip could all be used as a switch to complete a circuit.