Zech's Science Review 12.2018

Question 1

Balanced force

Answer 1

Balanced Forces - are two forces acting in opposite directions on an object, and equal in size

Question 2

Magnetic force

Answer 2

Magnetic Force - Attraction or repulsion that arises betweenelectrically chargedparticles because of their motion.

Question 3

Unbalanced force

Answer 3

Unbalanced force - Forcesthat cause a change in the motion of an object are

Question 4

At rest

Answer 4

At rest - not moving or exerting oneself.

Question 5

Motion

Answer 5

Motion - is the activity or process of continually changing position or moving from one place to another.

Question 6

Gravitational force

Answer 6

Gravitational force - is a force that attracts any two objects with mass.

Question 7

1 Speed

Answer 7

Speed -Therateorameasureoftherateofmotion

Question 8

Force

Answer 8

Force - strength or energy exerted or brought to bear:cause of motion or change:active power

Question 9

Friction

Answer 9

Friction - is the Resistance to motion of one object moving relative to another. It is not a fundamental force, like gravity or electromagnetism. Instead, scientists believe it is the result of the electromagnetic attraction between charged particles in two touching surfaces

Question 10

Contact force

Answer 10

Contact force - Aforceis a push or pull upon an object resulting from the object’sinteractionwith another object.

Question 11

Non-contact force

Answer 11

Noncontact force - is aforcewhich acts on a objectwithoutcoming physically incontactwith it.

Question 12

Pull

Answer 12

Pull - When force moves an object closer from something

Question 13

Repel

Answer 13

Repel - to force away or apart or tend to do so by mutual action at a distance

Question 14

Attract

Answer 14

Attract - to exert a force that draws something in

Question 15

Acceleration

Answer 15

Acceleration - the rate of change (or derivative with respect to time) of velocity.

Question 16

Position

Answer 16

Position - its location relative to a reference point (or origin of a coordinate system).

Question 17

Magnetism

Answer 17

Magnetism - the properties of attraction posed by magnets; the molecular properties common to magnets.

Question 18

Weight -

Answer 18

Weight - is the force of gravity on the object and may be defined as the mass times the acceleration of gravity, w = mg.

Question 19

Push

Answer 19

Push - When force moves an object away from something

Question 20

2 Speed

Answer 20

Speed - Distancetraveleddividedbythetimeoftravel.

Question 21

Speed can be calculated using the formula:

Answer 21

Speed = Distance / Time

Question 22

When two objects travel the same distance, the object that reached the finish line first must have been ________________

Answer 22

When two objects travel the same distance, the object that reached the finish line first must have been traveling at a faster speed.

Question 23

When two forces are unbalanced, acceleration _______

Answer 23

does occur (objects stay in motion).

Question 24

When two forces are balanced, acceleration _______

Answer 24

does not occur (objects stay at rest).

Question 25

The heavier an object, the less force/more force that is needed to speed up or slow down the object.

Answer 25

The heavier an object, the more force that is needed to speed up or slow down the object.

Question 26

When two balls of the same weight are hit from the same place, the ball that is hit with the least force /most force will travel the farthest.

Answer 26

When two balls of the same weight are hit from the same place, the ball that is hit with the most force will travel the farthest.

Question 27

If two balls are pushed with the same force on a slope, the heavier/lighter ball will travel the fastest and the farthest.

Answer 27

If two balls are pushed with the same force on a slope, the heavier ball will travel the fastest and the farthest.

Question 28

If two balls are pushed with the same force on flat surface, the heavier/lighter ball will travel the fastest and the farthest.

Answer 28

If two balls are pushed with the same force on flat surface, the lighter ball will travel the fastest and the farthest.

Question 29

In order to slow down an object, you could add a force in the __________ direction that the object is moving.

Answer 29

In order to slow down an object, you could add a force in the opposite direction that the object is moving.

Question 30

In order to speed up an object, you could add a force in the ________ direction that the object is moving.

Answer 30

In order to speed up an object, you could add a force in the same direction that the object is moving.

Question 31

The motion of an object can be changed by

Answer 31

speeding up, slowing down, or changing directions.

Question 32

An object that is moving at a variant speed/ constant speed has no change in speed or direction if no force is acting on it.

Answer 32

An object that is moving at a constant speed has no change in speed or direction if no force is acting on it.

Question 33

The heavier the object, the lesser/ greater amount of gravitational force that acts upon it

Answer 33

The heavier the object, the greater amount of gravitational force that acts upon it

Question 34

The planets are kept in orbit due to their

Answer 34

gravitational attraction for the sun.

Question 35

Gravity is a force that

Answer 35

pulls objects down.

Question 36

An object that is not moving will

Answer 36

remain at rest unless a force acts upon it.

Question 37

A force is required to

Answer 37

cause a change in motion.

Question 38

A force

Answer 38

is a PUSH or PULL