Force

Question 1

Force definition

Answer 1

Push or Pull

Question 2

Applied force definition

Answer 2

One object directly pushing or pulling on another object.

Question 3

Friction definition.

Answer 3

The resistance against motion when one object or substance rubs against another.

Question 4

Gravitational force definition.

Answer 4

Gravitational forces act between any two masses in the universe and pull them toward each other.

Question 5

Magnetic force definition.

Answer 5

A force between a magnet and other magnetic materials.

Question 6

Buoyant force definition.

Answer 6

An upward force a fluid experts on an object.

Question 7

Air pressure definition.

Answer 7

Force of the air surrounding an object pushing in all directions.

Question 8

Electric force definition.

Answer 8

A force between charged objects.

Question 9

Tension definition.

Answer 9

The force on an object being stretched from both sides.

Question 10

Compression definition.

Answer 10

When forces are on both sides of an object that causes the object to be squeezed or compacted.

Question 11

True or false: Balanced forces have no change in motion.

Answer 11

TRUE!!!!

Question 12

True or false: Unbalanced forces have a change in its motion-speed and (Possibly) direction.

Answer 12

TRUE

Question 13

Friction definition.

Answer 13

Friction is a force that opposes motion between two surfaces that are touching.

Question 14

Why is friction important.

Answer 14

Friction helps you control motion.

Question 15

Friction depends on…

Answer 15

The roughness of the surface and the force between the surfaces.

Question 16

Static friction definition.

Answer 16

When there is enough friction to keep an object from moving.

Question 17

Sliding friction definition.

Answer 17

Friction between solid objects that rub against each other when they move.

Question 18

Rolling friction definition.

Answer 18

Friction when one object rolls or turns over another surface.

Question 19

Fluid friction definition.

Answer 19

Friction that occurs when an object is moving through a liquid or gas that slows it down.

Question 20

Motion is…

Answer 20

Motion is a change in position over time when compared to a reference point.

Question 21

What would a distance vs time graph look like for an object moving
at a constant speed?

Answer 21

straight, diagonal line

Question 22

What would a distance vs time graph look like for an object moving at an increasing speed?

Answer 22

curved line that is steeper at the end than at the beginning

Question 23

What would a distance vs time graph look like for an object moving at a decreasing speed?

Answer 23

curved line that is steeper at the beginning than at the end

Question 24

Contact force definition.

Answer 24

With a contact force substances MUST be touching for there to be a force.

Question 25

Non contact force definition.

Answer 25

non-contact forces substances do not need to be touched for there to be a force.

Question 26

What is net force?

Answer 26

Net force is the combination of all of the forces acting on an object.

Question 27

What is a magnet?

Answer 27

A magnet is a material that certain other metals are attracted to because of the orientation of its molecules.

Question 28

Opposite poles... and like poles...

Answer 28

Opposite poles attract, like poles repel.

Question 29

What is a magnetic field?

Answer 29

Magnetic field is the area between and around magnets where there is a force.

Question 30

4 ways to decrease friction:

Answer 30

- Making a surface smoother - Use a lubricant - Reducing the force pushing down on the surface (the weight of the object) - instead of sliding an object, put it on wheels since rolling friction is usually less than sliding friction

Question 31

2 ways to increase friction?

Answer 31

Make the surface rougher Adding weight to an object creates more force between surfaces

Question 32

What is an electric force caused by?

Answer 32

The charge is caused by an object gaining or transferring electrons.

Question 33

What is static electricity?

Answer 33

Static electricity is the build up of charge (electrons) on an object.

Question 34

What is an electric discharge?

Answer 34

Electric discharge is when the build-up of charge (electrons) is transferred to another object.

Question 35

What are the three ways electric charge can be transferred and what do they mean?

Answer 35

-friction: rubbing -conduction: direct contact -induction: charged objects coming close to each other but not touching.

Question 36

Your doing awsome!!!

Answer 36

Keep at it!