Grade 7 revision

• Science
• Secondary Education
• Age 13

Scientific experiments!

Variables, hypothesis and methods!!

Planning An Experiment

Step 1:    Asking a question

Step 2:    Identifying variables

Step 3:    The prediciton (hypothesis)

Step 4:    Equipment

Step 5:    Method

Control variable: The variables that stay the same.

Which type of variable do we change in an experiment?

1. Independent
2. Dependent

What is the independent variable?

Dependent variable?

Control variables

Our experiment!

Three beakers all with a different temperature will be put in a room and left for a while. One is Hot, one is Cold and one is room temperature.

Independent

Dependent

Control

Starting water temperature

Water temperature over time

Same amount of water

same kind of Beakers

Beakers placed on same surface

Hypothesis

Definition: A guess you make with the information that you already have about the outcome of the experiment.

What will happen to the three beakers? (Hypothesis)

Example of a bad Method.

Write method for our experiment

(three Beakers with water)

1.

2.

3.

4.

......

What is a hypothesis?

1. Describes the experiment
2. The variable that we measure
3. What we think will happen and why
4. All the equipment used

Describe independent variable

Every step in a method describes ...... action(s)

1. 4
2. 3
3. 2
4. 1

How was the lesson?

I understood everything

I need some more revising