Non Contact Forces

Which of the following forces can push (repel) and pull (attract)?

• Magnetic Force

• Electric Force

• Gravitational Force

• Both Magnetic and Electric Force.

• All Three, Magnetic, Electric and Gravitational Force.

Tags

NGSS.3-PS2-3

When two magnets repel, they ________________

• change color
• pull together
• push apart
• get colder

Tags

NGSS.3-PS2-3

The magnitude of the force of magnetism is larger between two electromagnets when ________________

• the charges are both negative.

• the charges are both positive.

• the charges (in coulombs) are greater.

• the charges are opposite.

Tags

NGSS.MS-PS2-3

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?

• The magnetic field is only strong at the north pole

• The magnetic field is only strong at the south pole

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

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

If the North Pole of a permanent magnet is placed next to a compass as seen in the picture, which direction will the needle move if its tip is a north pole?

• Clockwise (to the right)

• Counter-clockwise (to the left)

• It will not move

• Need more information

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

How can you increase the strength of this electromagnet?

• Get a larger nail.

• Add more loops of wire.

• decrease the loops of wire.

• Get a smaller nail.

Tags

NGSS.MS-PS2-3

The gravitational force between two objects will be very small (x 10 ^-11) unless which is true?

• Both objects masses are very large.

• One objects mass is very large.

• Both objects are very far away from each other.

Tags

NGSS.MS-PS2-4

When placed at equal distances apart, the greatest gravitational attraction will be between two

• skateboards

• bowling balls

• school buses

Tags

NGSS.MS-PS2-4

NGSS.MS-PS2-5

As the product of two objects' masses increases, the pull of gravity

• Increases
• Decreases
• Stays the same

Tags

NGSS.MS-PS2-4

if mass of an object is doubled, force of gravitation will be

• a. halfed

• b. doubled

• c. increases 4 times

• d. no change

Tags

NGSS.MS-PS2-4