Summary

Summary GCSE AQA Physics Revision Notes

0 purchase

Module
Physics

Institution
GCSE

The revision notes for GCSE AQA Physics cover both basic and advanced concepts and are arranged in a methodical manner to aid in understanding. Subjects covered include electromagnetism, thermodynamics, and mechanics; important formulae, diagrams, and brief explanations are included. These notes he...

[Show more]

Preview 3 out of 19 pages

View example

Uploaded on June 17, 2024
Number of pages 19
Written in 2023/2024
Type Summary

Institution GCSE
Education GCSE
Module Physics
School year 200

£10.46

Add to cart

Save

100% satisfaction guarantee
Immediately available after payment
Both online and in PDF
No strings attached

AQA Physics (9-1) Revision

Year 9 Module 1: Forces and their Interactions

➔ 4.5.1.1: Scalar and Vector quantities

Scalar quantities only have magnitude. e.g temperature, mass, energy, distance, speed
Vector quantities have magnitude and direction. e.g force, displacement, velocity, acceleration, momentum

A vector quantity may be represented by an arrow. The length of the arrow represents the magnitude, and the
direction of the arrow represents the direction of the vector quantity

➔ 4.5.1.2: Contact and non-contact forces

A force is a push or pull that acts on an object due to the interaction with another object. It is a vector quantity.
All forces between objects are either:
→ Contact forces: The objects are physically touching
→ Non-contact forces: The objects are physically separated

Examples: Contact: friction, air resistance, tension, normal contact force
Non-contact: gravitation force (weight), electrostatic force, magnetic force

➔ 4.5.1.3: Gravity

Weight (N) = Mass (kg) x Gravitational Field Strength (N/kg)

The weight of an object may be considered to act at a single point referred to as the object’s ‘centre of mass’.
The weight of an object and mass of an object are directly proportional.
Weight is measured using a calibrated spring balance (newtonmeter)

➔ 4.5.1.4: Resultant Force

A number of forces acting on an object may be replaced by a single force that has the same effect as all the
original forces acting together. This single force is called the resultant force.

A single force can be resolved into two components acting at right angles to each other. The two-component
forces together have the same effect as the single force.

➔ 4.5.3: Forces and Elasticity

More than one force must be applied to change the shape of a stationary object by stretching, bending or
compressing, because a single force would simply cause the object to move in the direction in which the force
were to be applied.

Elastic deformation: An object undergoing elastic deformation will return to its original shape once any forces
being applied to it are removed
Inelastic deformation: An object undergoing inelastic deformation will not return to its original shape once the
shapes being applied on it are removed

,Force (N) = Spring constant (N/m) x extension (m)

➔ 4.5.4: Moments, levers and gears

A moment is the turning effect of a force. The size of a moment is defined by the equation:
Moment (Nm) = Force (N) x perpendicular distance from the pivot to line of action (m)

If an object is balanced, the total clockwise moment about a pivot equals the total anticlockwise moment about
that pivot.

Levers transmit the rotational effect of forces by increasing the perpendicular distance from the pivot at which a
force is applied relative to that of the load, causing a larger force to act upon the load than is applied to the lever

Year 9 Module 2: Introduction to Energy

➔ 4.1.1.1: Energy stores and systems

A system is an object or group of objects.

Energy can be transferred in 4 ways:
→ Mechanical work: a force moving an object through a distance
→ Electrical work: charges moving due to a potential difference
→ heating - due to temperature difference caused electrically or by chemical reaction
→ radiation - energy tranferred as a wave

Gravity

Kinetic

Thermal

, Elastic

Chemical

➔ 4.1.1.2: Changes in energy
Kinetic Energy (J) = 0.5 x mass (kg) x speed2 (m/s) Ek= ½ mv2
Elastic Potential Energy (J) = 0.5 x spring constant (N/m) x extension2 (m) Ee= ½ke2
Gravitational Potential Energy(J) = mass (kg) x gravitational field strength (N/kg) x height (m) E p= mgh

➔ 4.5.2: Work done and energy transfer
Work done (J) = Force (N) x distance (m) W= Fd
1 Joule = 1 Newton-metre
➔ 4.1.1.4: Power
Power is defined as the rate at which energy is transferred or the rate at which work is done.
Power (W) = Work done (J) / Time (s) = Energy transferred (J) / Time (s) P = W/T = E/T
An energy transfer of 1 joule per second is equal to a power of 1 watt

Module 3: Energy Transfers
➔ 4.1.2.1: Energy transfers in a system
Energy can be transferred usefully, stored or dissipated, but cannot be created or destroyed.
The higher the thermal conductivity of a material, the higher the rate of energy transfer by conduction across
the material.
➔ 4.1.1.2: Efficiency
Efficiency = Useful output energy transfer/ total input energy transfer
Efficiency = useful power output / total power input

➔ 4.1.3: National and global energy resources

The benefits of buying summaries with Stuvia:

Guaranteed quality through customer reviews

Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.

Quick and easy check-out

You can quickly pay through credit card for the summaries. There is no membership needed.

Focus on what matters

Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!

Frequently asked questions

What do I get when I buy this document?

You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.

Satisfaction guarantee: how does it work?

Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.

Who am I buying these notes from?

Stuvia is a marketplace, so you are not buying this document from us, but from seller GCSEnotessupplier. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy these notes for £10.46. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

70073 documents were sold in the last 30 days

Founded in 2010, the go-to place to buy revision notes and other study material for 15 years now

Start selling