Writing a Hypothesis & Prediction
Science: KS3, topic 4.1.8
Writing a Hypothesis & Prediction
A prediction and a hypothesis are different. But tests should include both a hypothesis and a prediction.
Hypothesis
- A hypothesis is formed from an idea about a particular scientific concept.
- A hypothesis is normally formed from an idea or observation.
Examples of hypotheses
- Examples of hypotheses include:
- Adding water to a sunflower will help it grow.
- An increase in temperature will increase the rate of reaction.
- A change in pH will affect how an enzyme works.
Prediction
- A prediction can be made after the hypothesis.
- The prediction will explain how your hypothesis can be tested.
Relationship Between Variables
- The prediction states a relationship between two variables.
- The relationship should be suggested in the hypothesis.
Examples of predictions
- Examples of predictions include:
- If I increase the amount of water I use to water the plant, it will grow more.
More Prediction Examples
- If I decrease the temperature, the rate of reaction will decrease.
- If I increase the pH, the rate of activity will increase.
The word 'because'
- You have written the prediction.
- So you can extend your work by using the word 'because'.
Using the Word 'Because'
- The word 'because' allows you to explain your prediction.
- Use your science knowledge to explain your prediction.
Test yourself on Writing a Hypothesis & Prediction
Which of these should be written first?
A hypothesis states that adding water to a sunflower will help it grow. Which prediction correctly tests this hypothesis?