1. Investigation (salt water)

Question 1

Define independent variable

Answer 1

Thing you are changing. It is also the x-axis

Question 2

A plant is given different amounts of water each day to see how much water would make it grow best. What is the independent variable?

Answer 2

Amount of water given to the plant.

Question 3

Define dependent variable

Answer 3

Thing you are measuring.
It is also the y-axis.

Question 4

A toy car is being tested with different tyres to see how fast it goes. What is the controlled variable?

Answer 4

The surface of the floor, the toy car.

Question 5

Define controlled variable

Answer 5

Thing you are trying to keep the same.

Question 6

Different types of tomatoes are being squeezed to see which tomato makes the most tomato juice. What is the dependent variable?

Answer 6

The amount of juice from a tomato.

Question 7

What is a hypothesis?

Answer 7

An educated guess.

Question 8

What is an aim?

Answer 8

Thing you are trying to find out.