KS3 Scientific Process Quiz SYI

What is the independent variable in a scientific experiment?

• The variable you measure

• The variable you change

• The variable you keep the same

• The variable you ignore

Which of the following is a control variable?

• The variable you change

• The variable you measure

• The variable you keep the same

• The variable you plot on the y-axis

A student investigates how the amount of sunlight affects the growth of a plant. What is the dependent variable in this experiment?

• Amount of sunlight

• Growth of the plant

• Type of plant

• Size of the pot

On a line graph, which axis is the dependent variable usually plotted on?

• The x-axis

• The y-axis

• The z-axis

• The origin

Which of the following best describes accuracy in a scientific experiment?

• How close your results are to the true value

• How close your results are to each other

• How many results you collect

• How quickly you finish the experiment

What is meant by the term 'anomaly' in a set of results?

• A result that fits the pattern

• A result that does not fit the pattern

• The average result

• The highest result

Which of the following is the best way to improve the reliability of your results?

• Use a different method

• Repeat the experiment several times

• Change the independent variable

• Only record the results you like

A student is investigating how the temperature of water affects how quickly a sugar cube dissolves. What is the independent variable?

• Temperature of water

• Time taken to dissolve

• Size of the sugar cube

• Volume of water

Which of the following is a qualitative observation?

• The temperature is 25°C

• The solution turned blue

• The mass is 200g

• The length is 15cm

What does the gradient of a straight line on a graph represent in general terms?

• The relationship between two variables

• The average of the data

• The number of data points

• The control variable