NCEA L1 Science Practice Questions - NCEA Level 1 Science - New Zealand Exam - NCEA L1 Science Practice Questions - NCEA Level 1 Science

Question 1

A Year 11 student investigates how light intensity affects the rate of photosynthesis in Elodea water plants by placing a lamp at distances of 10 cm, 20 cm, 30 cm, and 40 cm from the plant. What is the independent variable in this investigation?

The rate of photosynthesis measured in oxygen bubbles per minute The distance between the light source and the Elodea plant The temperature of the water bath surrounding the plant The concentration of sodium bicarbonate added to the water

Correct Answer:

The distance between the light source and the Elodea plant

Question 2

In an experiment testing how temperature affects the rate of reaction between hydrochloric acid and calcium carbonate, a student measures the time taken to produce 50 mL of carbon dioxide gas. What is the dependent variable?

The temperature of the hydrochloric acid solution The mass of the calcium carbonate marble chips used The time taken to collect 50 mL of carbon dioxide gas The concentration of the hydrochloric acid solution

Correct Answer:

The time taken to collect 50 mL of carbon dioxide gas

Question 3

Why is it essential to keep controlled variables constant during a scientific experiment?

To ensure that any observed changes in the dependent variable are caused solely by the independent variable To increase the speed at which the chemical reaction or biological process occurs To guarantee that the experiment yields the exact results predicted by the hypothesis To eliminate the need for repeating trials and calculating average values

Correct Answer:

To ensure that any observed changes in the dependent variable are caused solely by the independent variable

Question 4

A student measures the time taken for a toy car to roll down a ramp three separate times under identical conditions, obtaining times of 2.4 s, 2.5 s, and 2.4 s. How does repeating trials under identical conditions improve an investigation?

It eliminates systematic errors caused by poorly calibrated measuring tools It improves reliability by minimizing the impact of random timing errors It changes the independent variable to reveal non-linear relationships It automatically converts qualitative observations into quantitative data

Correct Answer:

It improves reliability by minimizing the impact of random timing errors

Question 5

In an enzyme investigation, three trials measuring oxygen volume produced per minute yield 14.2 mL, 14.8 mL, and 14.5 mL. What is the mean volume of oxygen produced per minute?

14.2 mL 14.5 mL 14.8 mL 43.5 mL

Correct Answer:

14.5 mL

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About this Exam

Prepare with the NCEA L1 Science Practice Questions - NCEA Level 1 Science - New Zealand Exam practice quiz. This question bank includes 100 questions covering student, reaction, rate, acid, and scientific. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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NCEA L1 Science Practice Questions - NCEA Level 1 Science - New Zealand Exam

This practice set contains 100 questions from the matching question bank and focuses on student, reaction, rate, acid, and scientific. Work through each question carefully, review the provided solutions, and revisit topics that need more study before your next attempt.

This is an independent study resource intended for practice and review; it is not an official examination or an endorsement by any organization named in the title.

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NCEA L1 Science Practice Questions - NCEA Level 1 Science - New Zealand Exam

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