Brainscape's Knowledge GenomeTM

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


See full index

LatinVocab > PHYSICSY9 > Flashcards

PHYSICSY9 Flashcards

1
Q

How many particles are atoms made of?

A

3

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

Name the 3 particles of an atom and state their charge

A

Proton (positive); electron (negative) & neutron (neutral)

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

What is the centre of an atom called?

A

nucleus

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

Are atoms charged?

A

No

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

What does an atom become if you remove an electron?

A

An ion

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

Are the numbers of protons & electrons the same?

A

Yes, because an atom is not charged

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

Electric circuits - describe the symbol for a resistor and variable resistor

A

Rectangle. Rectangle with diagonal arrow through

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

What is a current?

A

The flow of electrons round a circuit

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

What measures current and what is it measured in?

A

Ammeter, Amps (A)

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

What is a series circuit?

A

The current is the same throughout the circuit.

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

What is a parallel circuit

A

In a parallel circuit the current is split through different branches

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

What is the difference between how voltmeters and ammeters should be connected?

A

Voltmeter always in parallel; ammeter around

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

True or false: In a series circuit, a total or sum of the voltages across all the components will equal the voltage across the cell/battery

A

TRUE

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

What is a vector?

A

Vector quantities have two characteristics, a magnitude and a direction

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

What is a scalar?

A

A quantity which does not depend on direction is called a scalar quantity.

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

Is velocity a vector or scalar?

A

A vector, because it comprises speed and direction

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

True or false: the speed of an object tells us how fast it is travelling over a certain distance

A

True

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

What is the scientific unit for speed?

A

Metres per second or km/s

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Average speed = what?

A

the speed on average for the whole journey/total time

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

What is instantaneous speed?

A

the speed at a particular point in the journey

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

what can a distance/time graph tell us?

A

how the speed of an object varies

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

On a velocity/time graph there are three things to be aware of…:

A
  1. A horizontal line shows constant velocity. 2. A sloping line shows an acceleration (steeper line, faster acceleration) 3. The gradient of the sloping lines gives the value of the acceleration. Bet you didn’t know that.
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

How do you find the gradient of a line?

A

Divide vertical distance by horizontal distance (y divided by x)

24
Q

What is the equation for calculating acceleration?

A

Acceleration = change in velocity divided by time taken

25
Q

Formula for distance =

A

speed x time

26
Q

Formula for speed =

A

distance over time

27
Q

Formula for time =

A

distance divided by speed

28
Q

What is the top letter in a speed/distance/Time triangle?

A

D

29
Q

Area of a triangle =

A

base x height divide by 2

30
Q

Can the area under a graph tell you distance travelled?

A

Yes

31
Q

What is a resultant force?

A

When a system of forces is acting on an object, the difference between the forces is called the Resultant force. For example, a 3N force to the left and 10N force to the right gives a resultant force of 7N to the right.

32
Q

What happens to the motion of an object when the forces are balanced?

A

Remains same state

33
Q

What is centripetal force?

A

a force that acts on a body moving in a circular path and is directed towards the centre around which the body is moving.

34
Q

How many laws of motion did Sir Isaac Newton write?

A

3

35
Q

Newton’s First Law is what?

A

A moving object will continue unless external force; a stationary object will remain unless external force

36
Q

Balanced forces will not change motion; unbalanced forces will. True or false?

A

True

37
Q

What is mass?

A

Mass is the quantity of matter there is in an object. It only changes if the object itself changes.

38
Q

What is weight?

A

A measure of the pull of gravity on an object.

39
Q

What is weight measured in?

A

Newtons

40
Q

What is Earth’s gravitational field strenght?

A

10 newtons per kg

41
Q

How do you measure weight/

A

using a force meter in Newtons

42
Q

What is the calculation to measure the weight of an object?

A

Weight = Mass x gravitational field strength

43
Q

You can use a triangle for the WMG calculations. What is on top? What is bottom right?

A

W top; Bottom right G.

44
Q

Is gravity the same everywhere on earth?

A

No. Greater in the middle

45
Q

How do you measure Mass?

A

In kg

46
Q

Does air resistance increase with speed?

A

Yes

47
Q

What is Newton’s second law?

A

it describes the factors that affect the acceleration of an object.

48
Q

What does the acceleration in the direction of a resultant force depend on?

A
  1. The size of the force 2. The mass of the object
49
Q

What is inertial mass?

A

the force on it divided by the acceleration that force produces

50
Q

True or false? “Calculating an object’s inertial mass from values of force and acceleration gives the same mass value as that found by measuring the force of gravity on it.

A

True

51
Q

Formula to calculate inertial mass

A

Force = mass x acceleration

52
Q

In the triangle for inertial mass (FMA), what is at the top ?

A

F at the top.

53
Q

What is Newton’s 3rd Law?

A

It is about the forces on two different objects when they interact with each other. Can happen when they touch or at a distance e.g gravity

54
Q

What is an action-reaction force?

A

ON DIFFERENT OBJECTS. Two forces, always the same and in opposite directions

55
Q

What is a balanced force?

A

A force balanced by another equal force acting against it. They act on the same object.

56
Q

Collisions. True or false? “The action and reaction forces that occur during the collision are the same size but they do not necessarily have the same effects on the two objects because the objects have different masses”

A

True

LatinVocab (5 decks)

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