Chapter 5: Forces and Fields

What is the definition of force?

• A) A push or pull

• B) A geometric description

• C) A type of energy

• D) A magnetic field

Fill in the blank: The weakest of the 4 fundamental forces is the ________ force.

• Gravitational

• Electromagnetic

• Strong Nuclear

• Weak Nuclear

Which force binds the protons together in the nucleus of an atom?

• Gravitational

• Electromagnetic

• Strong Nuclear

• Weak Nuclear

Compare the strengths: The strong nuclear force is (a)   times stronger than the electromagnetic force.

• 10
• 100
• 1000
• 10000

What causes magnetic fields?

• Electric charges

• Magnets or current carrying wire

• Gravitational pull

• Nuclear reactions

Fill in the blank: The direction of gravitational force is toward the ________ of the object.

• Surface

• Center

• Edge

• Top

Field lines that always have a north and south pole are (a)   .

• Gravitational
• Electric
• Magnetic
• Nuclear

Fill in the blank: The agent involved in beta decay is the ________ force.

• Gravitational

• Electromagnetic

• Strong Nuclear

• Weak Nuclear

(a)   affects matter and electromagnetic radiation.

• Gravitational fields
• Electric fields
• Magnetic fields
• Nuclear fields

Fill in the blank: Electric fields are produced by any ________ object.

• Neutral

• Charged

• Magnetic

• Massive