Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Physics > Year 7 physics > Flashcards

Year 7 physics Flashcards

To do the whole of year 7 physics in a few notes, and cards

You may prefer our related Brainscape-certified flashcards:
Physics 101 flashcards AP® Physics flashcards
1
Q

What is the difference between a short arrow, and a big arrow

A

a short arrow represents less force than a big arrow

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Which way does the arrowhead always point?

A

the arrowhead always points in the direction of the force

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What does balanced forces mean?

A

It means that it will either stay stationary or it will stay moving at a constant speed

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What does unbalanced forces mean?

A

It means that one force is stronger than another, thus making the object move

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

formuler for force in Newtons?

A

Mass X acceleration

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What is net force?

A

how much it is moving in which direction = force X mass X acceleration

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

define Mass

A

total amount of matter on an object (Your mass stays the same no matter where you are)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

define weight

A

how much gravity is affecting an object

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

define the cause of friction

A

When two irregularities interlock with each other.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Define the difference between mass and weight

A

Mass is the amount of matter in an object, whereas weight is the gravitational pull of that object

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

define acceleration

A

How quickly a collection of mass changes its motion

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

define speed

A

How fast you are going over a certain time.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

define the difference between speed and acceleration

A

speed is defined as the rate of change in distance with respect to time whereas acceleration is how quickly a collection of mass changes its motion

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

define velocity

A

When something is accelerating or decelerating, it is changing its velocity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

define lift

A

used to counterweight gravity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

define drag

A

friction, and air resistance that comes when moving, it goes against any force of motion/air resistance

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

define thrust

A

the amount of force it is going in a specific direction.

18
Q

10m|s

A

accelerating by 10m per second

19
Q

define 10m|s^2
10 meters per second per second

A

You change from 0 meters per second to 10 meters per second in a second

20
Q

define reactional force

A

reactional force is the weight of the book and the pull of gravity, then the book will fall through, and the table will break.

21
Q

Define frictional force

A

always opposes action

22
Q

define contact force

A

forces that act when touched

23
Q

what does a steel core do?

A

makes an electro magnet weaker

24
Q

what does adding coils of wire to an electro magnet do?

A

makes the electro magnet stronger

25
Q

The electro magnetic field

A

is like the one found around a bar magnet

26
Q

What does a smaller current through the coils of wire around an electromagnet?

A

makes an electro magnet weaker

27
Q

Which poles of a magnet attract to each other

A

north and south

27
Q

The more paper clips attracted to an electro magnet

A

the stronger the field around the electro magnet

28
Q

Which poles of a magnet repel each other

A

south to south
or
north to north

29
Q

How to find the mass of an object when you know weight and gravitational field strength

A

m=w/g

30
Q

How to find the weight of an object when you know the gravitational field, and the mass of an object

A

w=m*g

31
Q

How to find the gravitational field of an object when you know the weight, and mass

A

g=w/m

32
Q

What is the gravitational pull of earth?

A

9.83

33
Q

What is 1n as kg

A

1kg*m/s^2

34
Q

What does Kilonewton mean?

A

equal to 1000 newtons

35
Q

define independent variable

A

the variable we change in the experiment

36
Q

define dependent variable

A

the variable we measure in the experiment

37
Q

define control variables

A

the variable which doesn’t change

38
Q

What to remember in graphs

A
  • Remember to add measurements
    • Put the title at the bottom, it is a figure, not a table
    • Make it relative to the information/data given/provided
      Always have to start at zero
39
Q
A

Physics (1 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions