Forces (Brett)

Question 1

3 Types of a force

Answer 1

Push/Pull/Twist

Question 2

Reaction force

Answer 2

A force when more force is applied, more force is given back

Question 3

Newtonmeter

Answer 3

a scale that measure force in newtons

Question 4

Relationship with newtons and weight

Answer 4

The more newtons, the heavier

Question 5

Friction

Answer 5

The force you get when two materials rub together

Question 6

Air resistance

Answer 6

The force that holds the particles in an atom’s nucleus together

Question 7

Gravity

Answer 7

The force that exists between all objects with mass

Question 8

Tension

Answer 8

The force you get when a material is being stretched

Question 9

Compression

Answer 9

The force you get when a material is being squashed

Question 10

Magnetism

Answer 10

The force that enables compasses to work and attracts metals like iron

Question 11

Electrostatic

Answer 11

The force you get between two electrically charged objects

Question 12

Nuclear

Answer 12

The force that holds the particles in an atom’s nucleus together

Question 13

How does an object move

Answer 13

If forces are unbalanced

Question 14

accelerate

Answer 14

increase of speed

Question 15

decelerate

Answer 15

Decrease of speed

Question 16

Where do levers turn

Answer 16

Around a fixed point/turning point/pivot

Question 17

Moment

Answer 17

A turning force that is measured in Newtons that with distance measured in meters

Question 18

How to increase a moment

Answer 18

increase the force applied to increase the distance from the pivot

Question 19

Moment equation

Answer 19

Moment (Nm) = Force (N) X Distance (M)

Question 20

Measurement that moments

Answer 20

Nm (Newton meters)

Question 21

Lever purpose

Answer 21

Levers are force multipliers that reduce the force needed to perform tasks

Question 22

law of moments

Answer 22

When an objects is not turning around a pivot, the total clock-wise moment must be exactly balanced by the total anti-clockwise moment

Question 23

When opposing moments are balanced

Answer 23

Sum of clockwise moments = sum of anti-clockwise moments = equilibrium

Question 24

Equation for two moments

Answer 24

F1 X D1 = F2 X D2

Question 25

Pressure measurement

Answer 25

a measure of how much force is applied over a certain area

Question 26

What direction does pressure act

Answer 26

90˚ to the surface

Question 27

Pressure equation

Answer 27

Pressure (N/M2) = Force (N) ÷ Area (M2)

Question 28

Pressure def

Answer 28

pressure is force of moving particles colliding with a barrier, particles both collide internally and externally

Question 29

Solid particle arrangement

Answer 29

All atoms are the same size, regular arrangement, compact, particles vibrate around a fixed point

Question 30

Liquid particle arrangement

Answer 30

Atoms are the same size, irregular arrangement, liquid can flow, particles can flow over each other, not fixed

Question 31

Gas particle arrangement

Answer 31

Particles are spread out and fill any volume of a container

Question 32

Relationship with pressure and altitude

Answer 32

The lower the altitude, the more pressure since more layers of particles are pushing down

Question 33

How is pressure caused

Answer 33

Collisions of particles

Question 34

2 factors that effect pressure

Answer 34

quantity and temperature

Question 35

relationship with the 2 factors and pressure

Answer 35

the more the quantity of particles or the higher the temperature the higher the pressure

Question 36

Mass

Answer 36

how much matter something has

Question 37

Volume

Answer 37

How much space something takes up

Question 38

Density

Answer 38

The amount of particles/atoms in a certain volume of confined space

Question 39

Millimetres

Answer 39

On tenth of a centimeter

Question 40

Density equation

Answer 40

Density (Kg/M3) = Mass (Kg) ÷ Volume (M3)