EO3: Non-Contact Forces

Front

Which of the following forces cannot act from a distance? Options: magnetism, electricity, kinetic friction, gravity

Back

kinetic friction

Front

What is the area of influence surrounding a non-contact force called?

Back

field

Front

Which of the following statements is true?
- When an object gains electrons, its positive charge increases.
- When an object gains electrons, its negative charge increases.
- When objects gain protons, they become positively charged.
- When objects transfer neutrons, the charge increases.

Back

When an object gains electrons, its negative charge increases.

Front

What causes an object to become magnetic?

Back

The atoms within a magnet align in the same direction creating a magnetic domain.

Front

Iron filings and bar magnets are placed on a piece of paper. Explain the pattern on the diagram below. Where is the magnetic field the strongest?

Back

The magnetic field is strongest at the magnet’s poles.

Front

What happens when two balloons rubbed with wool are brought near each other?

Back

The balloons will repel each other.

Front

An area surrounding an electron that exerts a force on nearby charges is a(n)

Back

Electric Field

Front

Which of these materials is NOT magnetic: Iron, Nickel, Aluminum, Cobalt?

Back

Aluminum

Front

The magnetic field of a magnet is ___ the further away you get from the magnet.

Back

Weaker

Front

What keeps the planets in our solar system in orbit around the Sun?

Back

Gravitational force