PH 3 http tinyurl comGCSEphysicsspec 1 Medical Applications

PH 3 http: //tinyurl. com/GCSEphysicsspec 1. Medical Applications of Physics Using Physics To Make Things Work Keeping Things Moving (electricity) Copy this link down 2. Download the specification 3. Learn it. Simplest way to excel… Know exactly what is expected of you. Revise only what is necessary. Know exactly what the correct scientific language is.

Guess the command word Give reasons for something happening or account for something. If you increase the potential difference across a bulb the bulb will get brighter BECAUSE more energy is being transferred by the bulb.

Guess the command word Give reasons WHY something is as it is or happens. Examples of words that should be in your answer: So Therefore Because Due to Since This means If you drink drive your stopping distance will be greater BECAUSE alcohol is a depressant. THIS MEANS THAT your reactions will be slower.

Guess the command word Write about the differences or similarities in something. You should look at BOTH sides of the argument. You might need to make a conclusion too. (6 mark questions in particular). Words like however and whereas are good… School holidays and term time are SIMILAR because I have to get up every day, HOWEVER they are DIFFERENT because I sleep in during the holidays.

Guess the command word Say what you can see or have seen Say what you see. Normally relates to graphs and tables of info. Try to: • Describe the shape of the line • State the pattern in the results • Use the labels/headings As the time goes on the gradient of the line gets increases so the speed increases more rapidly.

Guess the command word Give the differences between two things Contrast The current in a series circuit is the same everywhereas in a parallel circuit the current is split between the branches. Make a decision after considering both sides Conclude After considering the similarities and difference of term time and holiday, I prefer holidays. Explain what you understand to be the meaning Interpret If the speed is increasing more rapidly as time progresses, the acceleration must also be increasing BECAUSE the rate of change of speed is increasing.

If you do not write ALL for of these stages for every maths based problem you do, you are NOT going to get FULL marks. You are choosing to be lazy. Moreover you’re choosing to drop marks!!!

= 4 half lives 4 x 8 = 32 32

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Don’t forget to put arrows on rays every time they V change direction. V Must be parallel!!!

Similarity: For the same angle of incidence Difference: The angle of refraction of plastic is always less.

Observation: Y is more streamlined Effect: So its air resistance is lower at any given speed. Outcome: Therefore it can go faster before the resultant force is 0 N

Power (1 W = 1 J/s) • The energy input increases as the angle of tilt goes from 20° to 30°. • After the angle of tilt passes 30° the energy input decreases. • The pattern is the same for each month. If you do not specifically talk about each section of the table, you will not get full marks for the question.

Always mention FREE ELECTRONS when talking about conduction in a metal Free electrons Collide with ions in material Transfer (kinetic) energy Particles vibrate MORE Vibrate with more atoms so energy is transferred onwards

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80% decayed = 20% left 20% of 100, 000 = 20, 000 6. 2 days

• • Discuss the movement/behaviour of particles in both states. Discuss the particle arrangement & separation in both states. Discuss the forces between particles in both states. Links all of the above to explain one of the properties in the box above for BOTH states. 6