Science: Full Practice Paper 7
Full Practice Paper 7 is a seventh complete practice paper in the style of 13+ Common Entrance Science, again bringing together Biology, Chemistry and Physics questions in one timed sitting exactly as the real ISEB paper does.
Before you start
Make sure you're comfortable with these topics first:
Method
- Before starting, look through the whole paper briefly to see roughly how the marks are spread across biology, chemistry and physics, so no single subject catches you by surprise with unexpectedly many marks.
- Read each question's command word carefully: 'state' or 'name' wants a short factual answer, while 'explain' wants a reason linking cause and effect, and answering the wrong type of question loses easy marks.
- When a question gives repeated measurements, calculate the mean by adding all the values together and dividing by how many readings there are, and check for any anomalous (clearly wrong) reading that should be left out first.
- For any calculation, write the equation, substitute the numbers with correct units, work through the arithmetic carefully, and state the final answer with its unit.
- When a question is about gas exchange or respiration, be precise about the direction each gas moves, for example oxygen moving from air into blood, or carbon dioxide moving from blood into air.
- In the last few minutes, check every numerical answer has a sensible size and a unit, and check that no question or sub-part has been left blank.
Worked example
A pupil measures the time for a pendulum to complete one swing five times: 1.2 s, 1.3 s, 1.2 s, 2.1 s, 1.3 s. (a) Identify which reading is anomalous (clearly does not fit the pattern of the others). (b) Calculate the mean of the remaining four readings.
- Compare all five readings: 1.2, 1.3, 1.2, 2.1, 1.3 - four of the readings cluster closely together around 1.2 to 1.3 s, but one value (2.1 s) is clearly much higher than the rest.
- Identify 2.1 s as the anomalous reading, since it does not fit the pattern shown by the other four measurements.
- Add together the remaining four readings: 1.2 + 1.3 + 1.2 + 1.3 = 5.0.
- Divide this total by the number of readings used (4) to find the mean: 5.0 / 4 = 1.25.
- Final answer: (a) the 2.1 s reading is anomalous; (b) mean of the remaining readings = 1.25 s.
Practice questions
Type your answer and press Check to be marked straight away, or reveal the answer and mark yourself.
Q1Name the gas needed by the body for aerobic respiration to take place.Show answer
Answer: Oxygen.
Q2State the word equation for aerobic respiration.Show answer
Answer: Glucose + oxygen -> carbon dioxide + water (+ energy).
Q3A pupil applies a force of 10 N to move an object 2 m in the direction of the force. Use work done = force x distance to calculate the work done.Show answer
Answer: 20 J (10 x 2 = 20 J).
Q4Name the type of teeth used mainly for cutting food.Show answer
Answer: Incisors (the front teeth used for cutting/biting).
Q5State whether an acid has a pH value above or below 7.Show answer
Answer: Below 7.
Q6Name the force that pulls all objects with mass towards each other, keeping planets in orbit.Show answer
Answer: Gravity (gravitational force).
Q7A pupil measures the resultant force on an object as 0 N even though several forces are acting on it. State the term used to describe forces in this situation.Show answer
Answer: Balanced forces.
Exam-style questions
Written in the style of a 13+ Common Entrance exam paper, with a full mark scheme.
During vigorous exercise, a pupil's breathing rate and heart rate both increase. (a) Name the type of respiration mainly used by muscle cells when the oxygen supply cannot keep up with demand during very hard exercise. (b) Write the word equation for this type of respiration in human muscle cells. (c) Explain why breathing rate increases during exercise, in terms of the muscles' demand for oxygen and their need to remove carbon dioxide.
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A skydiver jumps from a plane and falls, with air resistance acting on her. At one point during the fall, her weight is 700 N and the air resistance acting on her is 500 N. (a) Calculate the resultant force acting on the skydiver at this point, stating its direction. (b) State what will happen to her speed at this point, given this resultant force. (c) Explain why the air resistance acting on her increases as she falls faster, and state what happens once air resistance becomes equal to her weight.
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Free printable worksheet
Want more practice on paper? Download the science: full practice paper 7 worksheet pack - 18 pages of exam-style questions with a full mark scheme. One email opens every download in this browser for 14 days - no account, no card. Print it for personal and classroom use.
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