Investigating Science HSC revision Module 6 - Technology

A student compressed a sample of gas by pushing on the end of a sealed syringe. A pressure sensor was used to measure the gas pressure in the syringe. The volume of the gas sample was measured using the scale on the syringe. Which graph is consistent with the student’s hypothesis that pressure × volume of a gas is a constant?

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A one-metre plastic ruler was calibrated during its manufacture to produce accu readings at 20°C.

The lengths of three objects were measured with this plastic ruler at 20°C. The lengths were 10.0 cm, 20.0 cm and 80.0 cm respectively.

The temperature was increased, which caused the ruler to expand in length by 10 However, the length of the three objects did not increase.

The objects were then measured again.

Which row in the table shows the three new measurements of the objects?

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• B

• C

• D

Which is the best action the student could take to minimise the risk when using acetone as a nail polish remover at home?

• A. Have running water available

• B. Wear gloves and safety glasses

• C. Use the acetone in a fume cupboard

• D. Keep the acetone away from naked flames

What method was used to confirm the existence of the Higgs boson?

• A. Fieldwork

• B. Conducting surveys

• C. Data analysis from experiments

• D. Locating and using information sources

Why can this type of earthquake wave cause the building shown to collapse?

• A. The building’s inertia prevents it from moving.

• B. The building is not designed to withstand vertical forces.

• C. The building accelerates in the same direction as the earthquake wave.

• D. Sudden horizontal acceleration of the building shears it from its foundations.

What must be kept the same in each trial of the experiment?

• A. The height of the bench

• B. The mass of the marble used

• C. The release point on the ramp

• D. The angle of inclination of the ramp

Assuming the investigation was valid, which would be the best representation of the expected results?

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What is the best explanation for the differences in readings on the devices compared to the exact temperature of the water?

• A. Human errors

• B. Parallax errors

• C. Random errors

• D. Systematic errors

Based on the information provided, which statement about the devices is correct?

• A. The analogue thermometer is as reliable as the digital temperature probe.

• B. The analogue thermometer is as accurate as the digital temperature probe.

• C. The analogue thermometer is less reliable than the digital temperature probe.

• D. The analogue thermometer is more accurate than the digital temperature probe.

Based on the information provided, which statement about the devices is correct?

• A. The analogue thermometer is as reliable as the digital temperature probe.

• B. The analogue thermometer is as accurate as the digital temperature probe.

• C. The analogue thermometer is less reliable than the digital temperature probe.

• D. The analogue thermometer is more accurate than the digital temperature probe.