Grade 6 Science practice questions – Lebanese curriculum

Q: Where do these Grade 6 Science questions come from?

They are a sample from EduRise's Grade 6 Science question bank (624 questions across 6 chapters), written to follow the Lebanese curriculum. Each chapter on EduRise has its own practice set and a timed exam.

Q: Are the answers explained?

Yes. Every question on EduRise shows the correct answer and an explanation after you answer, in practice mode and in the exam review.

Q: How do I get the full question bank?

Register at edurise.me and subscribe ($10/month) to practise every chapter of Grade 6 Science, take the timed exams and track your progress.

Question 1

If an eyepiece magnifies 10x and the objective lens magnifies 40x, total magnification is?

Accepted Answer

400x. The correct answer is "400x".

Question 2

Average number of mitochondria counted per cell — leg muscle cell: 2559; skin cell: 523; fat-storage cell: 126. About how many times more mitochondria does the leg muscle cell have than the fat-storage cell?

Accepted Answer

about 20 times. 2559 ÷ 126 ≈ 20. Trap: the difference (2433) is not "how many times".

Question 3

Sugar from a banana has to reach a thigh muscle. Which order of systems is correct?

Accepted Answer

digestive → circulatory → muscular. Food is broken down in the digestive system, the blood (circulatory) carries the nutrients, and the thigh muscle uses them. Trap: the respiratory system brings oxygen, not food.

Question 4

Breaths per minute measured for one student — sitting: 14; walking: 22; running: 35. How many more breaths does the student take in 10 minutes of running than in 10 minutes of sitting?

Accepted Answer

210. (35 − 14) × 10 = 210. Trap: answering for one minute only.

Question 5

If a car travels 100 km in 2 hours, its speed is?

Accepted Answer

50 km/h. The correct answer is "50 km/h".

Question 6

A car going 60 km/h north has a different velocity than a car going 60 km/h south because?

Accepted Answer

The directions are different. The correct answer is "The directions are different".

Question 7

The Sun holds about 99.8 % of all the mass in the solar system. A student says the planets would fly away in straight lines if the Sun vanished. What does this suggest?

Accepted Answer

the Sun's pull is what keeps the planets moving in curved orbits around it. With about 99.8 % of the mass, the Sun has the strongest pull; it bends the planets' paths into orbits. Trap: Earth-centred ideas.

Question 8

Jupiter is about 143 000 km wide and Earth about 12 700 km wide. About how many times wider is Jupiter than Earth?

Accepted Answer

about 11 times. 143 000 ÷ 12 700 ≈ 11. Trap: subtracting the widths instead of dividing.

Question 9

A 100-watt light bulb uses ___ energy per second than a 60-watt bulb.

Accepted Answer

More. The correct answer is "More".

Question 10

A town lists four energy sources: geothermal, oil, hydroelectric (moving water), biomass (wood, plant waste). Which one is non-renewable, and why?

Accepted Answer

oil, because it formed over millions of years and will run out. oil is a fossil fuel: chemical energy stored from ancient organisms; it is used far faster than it forms. The others are replaced naturally. Trap: thinking sunlight or wind will run out.

Question 11

At noon (air 34 °C) a lizard's body is at 35 °C and a sparrow's at 41 °C. At night (air 8 °C) the lizard is at 9 °C and the sparrow is still at 41 °C. Which conclusion fits?

Accepted Answer

the sparrow is warm-blooded; the lizard is cold-blooded and its temperature follows the surroundings. Sparrow: 41 °C day and night → warm-blooded (birds, mammals). Lizard: 35 → 9 °C → cold-blooded. Trap: cold-blooded animals can be warm on a hot day.

Question 12

A student puts the penguin and the whale in the same group because both move in unusual ways. Using backbone, body covering and how the young are fed, what is correct?

Accepted Answer

penguin is a bird and whale is a mammal, so the grouping is wrong. a penguin: cannot fly, swims, has feathers, lays eggs with hard shells → bird; a whale: breathes air with lungs, feeds its young on milk, lives in the sea → mammal. Trap: grouping by movement instead of body features.

Grade 6 Science Questions and Answers

12 Grade 6 Science practice questions

1. If an eyepiece magnifies 10x and the objective lens magnifies 40x, total magnification is?

2. Average number of mitochondria counted per cell — leg muscle cell: 2559; skin cell: 523; fat-storage cell: 126. About how many times more mitochondria does the leg muscle cell have than the fat-storage cell?

3. Sugar from a banana has to reach a thigh muscle. Which order of systems is correct?

4. Breaths per minute measured for one student — sitting: 14; walking: 22; running: 35. How many more breaths does the student take in 10 minutes of running than in 10 minutes of sitting?

5. If a car travels 100 km in 2 hours, its speed is?

6. A car going 60 km/h north has a different velocity than a car going 60 km/h south because?

7. The Sun holds about 99.8 % of all the mass in the solar system. A student says the planets would fly away in straight lines if the Sun vanished. What does this suggest?

8. Jupiter is about 143 000 km wide and Earth about 12 700 km wide. About how many times wider is Jupiter than Earth?

9. A 100-watt light bulb uses ___ energy per second than a 60-watt bulb.

10. A town lists four energy sources: geothermal, oil, hydroelectric (moving water), biomass (wood, plant waste). Which one is non-renewable, and why?

11. At noon (air 34 °C) a lizard's body is at 35 °C and a sparrow's at 41 °C. At night (air 8 °C) the lizard is at 9 °C and the sparrow is still at 41 °C. Which conclusion fits?

12. A student puts the penguin and the whale in the same group because both move in unusual ways. Using backbone, body covering and how the young are fed, what is correct?

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