8th Grade 3rd Quarter

Name the three types of non-contact forces we have learned about

• positive

  negative

  neutral

• electric

  magnetic

  gravitational

• electric

  neutral

  magnetic

• magnetic

  gravitational

  positive

Tags

NGSS.MS-PS2-5

The type of forces we have learned about means they do not need to touch to affect the field around them. This is called:

• non-contact

• neutral

• north/south pole reversation

• invisible forces surrounding objects

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-4

NGSS.MS-PS2-5

A field is defined as:

• repulsion of forces

• noticeable pull between two objects

• invisible and extends through space

Tags

NGSS.MS-PS2-5

An Iron needle has been given a positive charge, which type(s) of fields will exert force on the needle?

• only a magnetic field

• a magnetic and an electrical field

• an electrical and a gravitational field

• a magnetic, an electrical, and a gravitational field

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Where is the magnetic force on the iron fillings strongest and how do you know?

• The ends of the magnet because of the poles

• The direct center of the magnet

• The area around the magnet - because it forms a curved line

Tags

NGSS.MS-PS2-3

What is this object and what does it measure?

• Two Pan Balance measures the force of gravity acting on the object

• Spring Scale measures force due the gravity acting upon the object

• Two Pan Balance measures force because of the weight

• Spring Scale measures forces because of the spring tension

This force increases with mass, decreases with distance, and points towards the center of the object

• Reverse magnetic electrical forces

• Electrical Force

• Magnetic Force

• Gravitational Force

Tags

NGSS.MS-PS2-4

Identify the forces being applied:

A book is at rest on a table

• Applied

  Friction

• Normal

  Gravity (weight)

• Tension

  Gravity (Weight)

• Air Resistance

  Gravity (Weight)

Tags

NGSS.MS-PS2-4

What forces are acting upon the egg

An egg is free falling from a nest in a tree (neglect air resistance)

• Thrust

  Gravity (Weight)

• Air Resistance

  Gravity (Weight)

• Gravity (Weight)

• Friction

  Gravity (Weight)

Tags

NGSS.MS-PS2-4

Consider the forces acting:

A car is parked on a sloped street

• Normal

  Friction

  Gravity (weight)

• Tension

  Normal

  Gravity (Weight)

• Air Resistance

  Friction

  Gravity (weight)

  Applied

• Friction

  Gravity

  Normal

  Applied