Enquiry unit

• Science
• Lower Secondary (Key Stage 3)

Enquiry unit

Hypothesis, variables, risks, hazards, equipment and uses.

What is the first step in writing a hypothesis?

1. Conducting experiments
2. Gathering data
3. Drawing conclusions
4. Identifying the problem or question

What is the purpose of fair testing in an experiment?

1. To gather as much data as possible
2. To eliminate the need for controls
3. To ensure only one variable is tested
4. To make the experiment more complex

Which of the following is an essential element of a well-written hypothesis?

1. It should be based on opinion
2. It must be testable
3. It should be long and detailed
4. It only applies to chemistry experiments

Why is it important to establish a fair test when conducting an experiment?

1. To ensure the reliability of the results
2. To make the experiment more challenging
3. To impress the audience
4. To speed up the data collection process

What role does the control group play in fair testing?

1. It is unnecessary for fair testing
2. It introduces a new variable
3. It provides a baseline for comparison
4. It makes the experiment more expensive

What is an independent variable?

1. A variable that stays constant
2. A variable that is observed and measured
3. A variable that is manipulated or changed
4. A variable that depends on the outcome

Which of the following is NOT an independent variable?

1. The time duration of an activity
2. The dosage of a medication
3. The temperature in an experiment
4. The outcome of an experiment

What is the rule for choosing an independent variable?

1. It should be the variable that has the most impact
2. It should be the variable that is intentionally changed
3. It should be the variable that is measured first
4. It should be the variable that is least understood

Which of the following is a dependent variable?

1. The amount of water given to the plants
2. The temperature in the room
3. The type of soil used
4. The growth of plants over time

What is not a dependent variable in an experiment?

1. The experimental procedure
2. The independent variable
3. The control group
4. The research hypothesis

Which of the following could be a dependent variable?

1. The number of teachers in the school
2. The test scores of students after a new teaching method
3. The students' age
4. The school's location

What is a common example of a dependent variable?

1. The color of the candle
2. The type of wax used
3. The size of the wick
4. The time it takes for a candle to burn out

What is not typically considered a dependent variable?

1. The data collected
2. The analysis method used
3. The outcome of the experiment
4. The sample size of the study

What is a control variable?

1. A variable that is kept constant in an experiment.
2. A variable that is only used in observational studies.
3. A variable that changes during an experiment.
4. A variable that is not important in scientific research.

Which of the following is not a control variable?

1. The variable which does not change.
2. The constant variable.
3. Keeping the temperature the same.
4. The independent variable.

What is an example of a control variable?

1. Keeping the temperature constant in an experiment.
2. Changing the light intensity in an experiment.
3. Measuring the growth of plants in different soils.
4. Varying the amount of fertilizer in a plant study.

What is an example of a risk in a science lab?

1. Wearing safety goggles
2. Spilling chemicals on skin
3. Using a fume hood
4. Turning off the lights

Why is it important to identify risks in a science lab?

1. To save time by skipping safety precautions
2. To have fun conducting experiments
3. To prevent accidents and ensure safety
4. To impress classmates with daring experiments

What is the definition of risks in a science lab?

1. Cleaning up spills promptly
2. Using proper lab equipment
3. Following safety guidelines
4. Potential for harm or danger during experiments

How can risks in a science lab be minimized?

1. By working alone in the lab
2. By ignoring warning signs
3. By conducting experiments quickly
4. By following safety protocols and using protective equipment

What should you do if you encounter a risk in a science lab?

1. Ignore it and continue with the experiment
2. Blame a classmate for the risk
3. Post about it on social media
4. Report it to the instructor immediately

What is a hazard?

1. A type of safety measure
2. A synonym for precaution
3. A form of protective equipment
4. A potential source of harm or adverse health effect

Which of the following is not a hazard?

1. A fire extinguisher
2. Chemical fumes
3. A slippery floor
4. Exposed electrical wires

What is used to measure the mass of an object in a science lab?

1. C. Bunsen burner
2. A. Balance
3. D. Microscope
4. B. Thermometer

Which equipment is used to hold test tubes during experiments?

1. D. Petri dish
2. C. Pipette
3. A. Graduated cylinder
4. B. Test tube holder

What is used to heat substances in a controlled manner in a science lab?

1. C. Bunsen burner
2. A. Beaker
3. B. Funnel
4. D. Erlenmeyer flask

Which equipment is used to measure liquid volume accurately in a science lab?

1. C. Petri dish
2. A. Microscope
3. D. Measuring cylinder
4. B. Balance

What is used to observe tiny objects or organisms in a science lab?

1. D. Funnel
2. C. Test tube holder
3. B. Bunsen burner
4. A. Microscope

Which piece of equipment is this?

1. Test tubes
2. Boiling tubes
3. Beakers
4. Measuring cylinders

Which piece of equipment is this?

1. Test tubes
2. Boiling tubes
3. Beakers
4. Measuring cylinders

Which piece of equipment is this?

1. Test tube
2. Beaker
3. Measuring cylinder
4. Gas tap

Risks that could
be in a science lab

Bunsen burner

Test tubes and holder

Beaker

Boiling tube