Revise iGCSE Physics

Every single unit...

Measurements

Motion

Pressure

Energy

Thermals​

Sounds

Rays

Electricity

Magnets

Electrons

Radioactivity​

...all in a Mega-quizizz!

But, to make things easier for us,

we divided them into 3 topics:​

Electricity

Magnets

Electrons

Radioactivity​

​Particles

Thermals

Sounds

Rays​

​Waves

Measurements

Motion

Pressure

Energy​

​Properties

​1 light year = 9480000000000000 mm

​Measurements

1. ​We need to measure stuff, using an unit (mm, N, Pa) and a number (42, ⅘, 3.2 × 10³)

2. SI units (s, m, kg) >>> imperial units (lb, yd)​

3. Make sure your equipment is set to zero. Micrometer works by reading both normal and spinning barrel numbers

4. density = mass ÷ volume

5. ​Volume can be measured by the amount of water displacement

6. Mass don't change once in space, weight does​

​Motion

1. ​Velocity is how fast you move, speed is velocity but without direction, and acceleration is how fast you change your velocity

2. Gradient and area under the speed-time graph gives acceleration and position

3. ​Free fall is 9.8 m/s² of acceleration

4. Newton's first law of motion: stuff would drift or stay still if no force is applied

5. ​Newton's second law of motion: force = mass × acceleration

6. Friction depends on the object movement

​Motion

1. ​Gravitational force attracts mass and create weight

2. ​​Newton's third law of motion: Stuff when create movement would create opposing force

3. momentum = mass ×​ velocity, impulse is the change in momentum (not change in time)

4. ​Momentum is conserved in a closed system

5. Forces are added in a parallelogram rule

6. Moving in circle require acceleration, which is the centripetal​/centrifugal force​

​Pressure

1. ​moment = force × shortest distance

2. Center of mass must be inside the base in order to be stable

3. Spring stretch in proportion to the force applied (Hooke's law), until a limit

4. pressure = force ÷ area​

5. ​pressure = density × gravity × height

6. 1 atmosphere = 100000 newtons per square meter​, however, we are not crush as it is being cancelled

7. Pressure and volume is inversely proportional​

​Energy

1. ​moment = force × shortest distance

2. Center of mass must be inside the base in order to be stable

3. Spring stretch in proportion to the force applied (Hooke's law), until a limit

4. pressure = force ÷ area​

5. ​pressure = density × gravity × height

6. 1 atmosphere = 100000 newtons per square meter​, however, we are not crush as it is being cancelled

7. Pressure and volume is inversely proportional​