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Practice · Grade 8

Grade 8 General Science exam practice (unofficial)

8 original questions · Grade 8 · General Science

Original General Science practice questions written by Abrari for students preparing for the Grade 8 exam. Try five on this page, then take the timed mock. They are not past exam questions and not an official paper.

ይሞክሩ · Try 5

Try 5 Grade 8 General Science questions

5 የልምምድ ጥያቄዎች

መግቢያ አያስፈልግም · No sign-in needed

Original Abrari practice questions. Unofficial — not past exam questions.

1 / 5General ScienceCells

What is the basic unit of life?

Timed mock

8 questions · 12 minutes · score and answers at the end. Runs on this page — no sign-in, no payment.

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All questions in this set

Every question is an original Abrari practice item. Answers and explanations are inside each item.

Q1 · Cells

What is the basic unit of life?

  1. A. Atom
  2. B. Cell
  3. C. Tissue
  4. D. Organ
Answer and explanation

Answer: B

All living things are made of cells. Cells form tissues, tissues form organs.

Q2 · Elements

What is the chemical symbol for sodium?

  1. A. S
  2. B. So
  3. C. Na
  4. D. Sd
Answer and explanation

Answer: C

Sodium's symbol Na comes from its Latin name, natrium. S is sulfur.

Q3 · Motion

A car travels 120 km in 2 hours. What is its average speed?

  1. A. 240 km/h
  2. B. 60 km/h
  3. C. 122 km/h
  4. D. 118 km/h
Answer and explanation

Answer: B

Speed = distance ÷ time = 120 km ÷ 2 h = 60 km/h.

Q4 · Cells

Which part of a cell contains the genetic material and controls the cell's activities?

  1. A. Cell wall
  2. B. Nucleus
  3. C. Cytoplasm
  4. D. Vacuole
Answer and explanation

Answer: B

The nucleus holds the DNA and controls the activities of the cell.

Q5 · Acids and bases

What is the pH of pure water at 25 °C?

  1. A. 0
  2. B. 3
  3. C. 7
  4. D. 14
Answer and explanation

Answer: C

Pure water is neutral, with a pH of 7.

Q6 · Forces

Which force pulls objects towards the centre of the Earth?

  1. A. Friction
  2. B. Magnetism
  3. C. Gravity
  4. D. Tension
Answer and explanation

Answer: C

Gravity is the force of attraction between the Earth and other objects.

Q7 · Changes of matter

Which of these is a chemical change?

  1. A. Melting ice
  2. B. Burning wood
  3. C. Cutting paper
  4. D. Dissolving sugar in water
Answer and explanation

Answer: B

Burning makes new substances (ash, smoke, carbon dioxide). The others are physical changes.

Q8 · Plants

Which gas do green plants take in for photosynthesis?

  1. A. Oxygen
  2. B. Carbon dioxide
  3. C. Nitrogen
  4. D. Helium
Answer and explanation

Answer: B

Plants take in carbon dioxide and water and, using light energy, make sugar and give out oxygen.

Frequently asked questions

Are these real Grade 8 exam questions?
No. Every question in this Grade 8 General Science set is an original practice item written by Abrari. None is a past exam question, and none comes from an official or leaked paper.
Are the answers official?
No. Answer letters and explanations are unofficial Abrari keys, not an official marking scheme.
Is Abrari part of the Ministry of Education or a regional education bureau?
No. Abrari is an independent study aid. It is not affiliated with, endorsed by, or an official product of MoE, regional education bureaus, or EAES.
Do I need to sign in or pay?
No. Practice and the timed mock run on this page for free. There is no payment step.

Try 5 from this paper