Y1 Revision for Scientific Endeavour

A coin was placed in a measuring cylinder with water. Which of the following is/are correct research problem for an experiment with IV: diameter of coin and DV: volume of water displaced? (Can select more than one)

• How does the volume of water displaced affect the diameter of the coin?

• The larger the diameter of the coin, the larger the volume of water displaced.

• How does the diameter of the coin affect the volume of water displaced?

• To investigate the effect of diameter of coin on the volume of water displaced.

• To investigate if the diameter of the coin affects the volume of water displaced.

What is the IV and DV of this research problem: How does the length of a string affect the time taken for a pendulum to make one full swing?

Write a hypothesis for the following research problem: To investigate how the force upon impact is affected by the height at which objects are released from.

What is the IV and DV of the following hypothesis: The increase in temperature increases the rate of plant growth.

Write a research problem for the following hypothesis: The heavier the mass of the object, the faster the speed it will fall.

Write a hypothesis for the experiment with IV: number of batteries used in a circuit and DV: intensity of light given out by the light bulb.

Some students were investigating the effect of temperature (measured with a thermometer) on the height of plants (using a measuring tape) as recorded in the table. List the mistakes they made in recording the data.

Why is it necessary to repeat the experiment and calculate the average ?

To ensure...

• accuracy

• precision

• reliability

Which shows the correct match of the variable to the apparatus that is used to measure it? (can select more than one)

• Variable: time

  Apparatus: clock

• Variable: length

  Apparatus: measuring tape

• Variable: volume

  Apparatus: beaker

• Variable: weight

  Apparatus: electronic balance

• Variable: angle

  Apparatus: protractor

Which shows the correct match of apparatus to the possible error that could occur during measurement? (Can select more than one)

• Metre rule, zero error

• Measuring tape, parallax error

• Digital calipers, parallax error

• Electronic balance, zero error

• Measuring cylinder, parallax error