Gravity, Electricity and Magnetism

A student claims that Earth has a magnetic field. Which evidence would best support the student's claim?

• The student creates a working circuit that illuminates a bulb using wire and a battery.

• The student turns in all directions with a compass and the needle always points north.

• The student receives a shock after walking across the carpet and touching a doorknob.

• The student rolls a ball down a large hill and the ball comes to a complete stop at the bottom

Tags

NGSS.MS-PS2-5

If Earth had twice the mass it has now, how would the gravitational force between it and the Sun change?

• The gravitational force would be twice as much as it is now.

• The gravitational force would be four times as much as it is now.

• The gravitational force would be half as much as it is now.

• The gravitational force would be the same as it is now.

Tags

NGSS.MS-PS2-4

Which of the diagrams shows the least gravitational force?

• I

• II

• III

• IV

Tags

NGSS.MS-PS2-4

​ (a)   is the flow of an electric charge through a conductor

• Electrical Current

• Static Electricity

• Magnetism

• Conductors

Electrons always travel from ​ (a)   objects to (b)   objects.

• negative

• positive

• neutral

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

​ ​ (a)   is the best electrical conductor

• Copper Penny

• Plastic Tubing

• Glass Rod

• Cotton String

​​ (a)   = particles in the atom that have no charge

​ (b)   = circuit that has more than one pathway for current to travel through

(c)   = temporary magnet made by placing a piece of iron inside a current carrying coil of wire

• neutrons

• parallel

• electromagnet

• electrons

• protons

• series

• ferromagnet

Match the following

• positive/ negative

• electromagnet

• turns on/off by use of electriciy

• Van de Graff Generator

• electricity made by friction

• electric charges

• space where magnets exert force

• static electricity

• device that creates static electricity

• magnetic field

Tags

NGSS.MS-PS2-5

Which of the diagrams shows the greatest gravitational force?

• I

• II

• III

• IV

Tags

NGSS.MS-PS2-4

If two charges attract to each other, then which of the following is true?

• Both charges must be positive.

• Both charges must be negative

• Both charges must be different.

• Both charges must be equal in value.

Tags

NGSS.MS-PS2-3