Unit 2 Test Review

What is the unit of measurement for force?

• Joules

• Newtons

• Watts

• Meters

What happens when forces are balanced?

• There is movement

• There is no net force and no movement

• The object speeds up

• The object changes direction

Tags

NGSS.MS-PS2-2

What is a vector?

• A measure of mass

• A force and direction

• A type of energy

• A unit of time

Tags

NGSS.MS-PS2-2

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NGSS.MS-PS2-1

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According to the Law of Electric Charges, what happens when like charges are near each other?

• They attract

• They repel

• They combine

• They neutralize

What happens to an atom when electrons are added to it?

• It becomes positive

• It becomes neutral

• It becomes negative

• It remains unchanged

What is the purpose of a spring scale?

• To measure temperature

• To measure time

• To measure the force required to lift objects

• To measure distance

What is the primary function of electrochemical cells?

• To convert electrical energy into chemical energy

• To convert chemical energy into electrical energy

• To store mechanical energy

• To produce thermal energy

Which part of the electrochemical cell is negatively charged?

• Cathode

• Anode

• Electrolyte

• Semi-permeable barrier

What role does the electrolyte play in an electrochemical cell?

• It stores energy

• It removes electrons from the anode

• It removes electrons from the cathode

• It provides mechanical support

Diagram of an electrochemical cell showing electron flow from anode to cathode.

• Electron flow from anode to cathode

• Electron flow from cathode to anode

• Electron flow from positive to negative

• Electron flow from negative to positive

Tags

NGSS.MS-PS2-5

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