Physics Final

The first law of thermodynamics states that energy is

• created

• destroyed

• conserved

• created and destroyed

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NGSS.HS-PS3-1

NGSS.HS-PS3-2

Transfer of heat by contact and collisions between the molecules in a substance.

• conduction

• radiation

• convection

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Which best describes ENTROPY?

• Useful heat energy needed to drive an engine

• Heat that can be stored to be used at a later date

•   Random energy that escapes from the system

• A state of order in a physical system

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When an electric current is run through a wire, a(n) ____________________  _______________ is temporarily created.

• electric field

• electric charge

• magnetic field

• black hole

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Turning the electric current ______ creates the magnetic field, while turning the electric current _____ removes the magnetic field.

• on, off

• off, on

• up, down

• down , up

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NGSS.HS-PS2-5

NGSS.HS-PS3-5

A current is produced when _______________ flow in a circuit.

• protons

• neutrons

• electrons

• nucleons

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NGSS.HS-PS2-5

What does this image show?

• Parallel circuit

• Series circuit

• Magnet

• Electromagnet

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NGSS.HS-PS3-5

Increasing the number of coils in an electromagnet will _________ the power of the magnet.

• decrease

• increase

• not affect

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NGSS.HS-PS2-5

If the battery produced 12.6 Volts and what would be the current flow be for a 6.0 Ohm resistor

• 2.1 Amps

• 2.4 Amps

• 1.71 Amps

• 15 Amps

If the Voltage is increased and the resistance stays the same, Current will

• Increase

• Decrease

• Stay the same

• X