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Science L7 Physics Review
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Looped wires create a greater magnetic field . Yes or no
Yes
How can we increase the electromagnetic charge? Increase the power source of make a bigger switch
Increase the power
What is the advantage of an electromagnet?
On and off
Electromagnetism is used in many ways. Give an example
Scrapyard, eye surgeon, MRI
A series circuit has one or many pathways for electrons to flow?
One pathway
A battery changes chemical potential energy to electrical potential energy. True or false
True
What factors affect the flow of electrons? Length of the cord OR how many electrons in the cord
Length of the cord
What is current? Movement of electrons over time or number of electrons moving over time
Movement of electrons over time
Materials that conduct/resist electrons allow easy flow of electrons.
conduct
Where can ultrasound be used for in the medical field?
Seeing inside the body, like prenatal ultrasound
Ultrasound waves can be heard by humans. True or false
False, humans cannot hear them
Conduction is the movement of particles/water in two /one directions in a liquid or gas.
particles, one
When heat is applied to an object, what happens to the material ? Contracts or expands
Expands
How do atoms vibrate in a solid? A lot OR very little
Very little
What energy is in the string of the bow? Elastic Potential energy OR gravitational potential energy
Elastic potential energy
The higher/lower the object the more/less the potential energy
Higher and more
Which has the greater graviational potential energy ? The man or the cell phone?
Man as heavier
Potential energy can be calculated by M x H x G . What do these stand for?
Mass x height x gravity
What is potential energy? Store energy OR used energy
Energy waiting to be used/ stored energy
Energy is the ability to cause __________. Change OR new direction
change
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