# Problem Solving & Exam Technique Flashcards

How do you calculate a percentage change?

difference/original x 100%

If the question asks, ‘what is the difference between’…?

you must mention BOTH e.g difference between diffusion and active transport - active transport requires energy is not enough MUST mention diffusion does not require energy.

If the question asks, ‘calculate the average’…what do you do?

the total/the number of numbers you added together

If the question asks, ‘calculate the average change’…what do you do?

total change/ time

BUM?

Box the command word

Underline the key terms

Marks - how many is it worth? Have I done enough?

If the question asks you to ‘describe’…what should you do?

As much detail as you can give.

The police have asked for a description of the person that stole your bike, you would not describe them as ‘man’.

If the question asks you to ‘explain’…what should you do?

Tell me WHY

What should you do if you have a graph with 2 lines?

Colour them in with 2 different colours

How do you read a graph accurately?

Use a ruler

What should you do if you see the word ‘reliable’ in a question?

Mention what exactly you are REPEATING and then calculate an average

If the question asks for ‘percentage increase’…?

difference/original x 100%

If the question asks for a ‘percentage decrease’…?

difference/original x 100%

What is an independent variable?

The one thing that has been changed by the scientist in the experiment

What is a dependent variable?

The thing that is measured to get the results in an experiment.

Am*unt?

Don’t you swear at me! DO NOT use this term in your answer instead use volume, mass, size