Unit 3.1 Review for CUA

What do the lines around this magnet represent?

• North Pole

• South Pole

• Magnetic Declination

• Magnetic Field

As the distance between two magnets increases (they get farther apart), the force between them:

• Increases
• Decreases
• Stays the Same

What characteristics do magnetic substances have?

• They can give you a "shock" when you touch them
• They can push or pull objects without touching them
• They are always black and cold to touch
• They fall faster than other objects when you drop them

You can make an electromagnet stronger by...

• increasing the current through the wire
• make the iron core bigger
• increase the number of loops around the core
• All of these

as the mass of an object increases, the pull of gravity...

• Increases

• Decreases

• Stays the same

Tags

NGSS.MS-PS2-4

Why do we have a stronger gravitational attraction with Earth than the Sun?

• the sun has a larger mass

• the Earth has a larger mass

• we are closer to center of sun

• we are closer to center of Earth

What does the strength of gravity between two objects depend upon?

• Mass & distance
• Mass & weight
• Gravity & inertia
• Inertia & mass

Tags

NGSS.MS-PS2-4

Which of the following will not change in different gravitational fields?

• weight
• force
• mass
• pounds

Complete the following statement: The farther away two planets are the _______ the gravitational force between them.

• more
• same
• dosen't matter
• less

The graph represents the gravitational attraction between two equal masses vs. their distance apart, which statement BEST describes the information presented by the graph?

• Distance is only a factor in space, not on earth.

• Gravitational attraction is a function directly proportional to distance.

• Gravitational attraction is a function inversely proportional to distance.

• Gravitational attraction is not related to the distance between objects.