General Science Grade 7: Textbook

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Questions and Answers

Define science.

Science is a systematic method of gaining knowledge about the physical and natural world and the social aspect of human society. It provides an ordered way of learning about the nature of things, based on observation and evidence.

What is indigenous science?

Indigenous science is process by which Indigenous people build their empirical knowledge of their natural environment. It is knowledge based on the social, physical and spiritual understandings.

What is conventional science?

Conventional science is the system of knowledge which relies on certain laws that have been established through the application of the scientific method to phenomena in the world around us.

Why teach Indigenous Knowledge in science?

<p>Firstly, to increase awareness of original culture and identity. Secondly, in modern day environmental problems have social and cultural dimensions which benefit from perspectives other than Western science.</p> Signup and view all the answers

What are the major branches of science?

<p>Natural science and social science.</p> Signup and view all the answers

Give a short description of natural science.

<p>Natural science is the study of nature and natural laws. It includes fields such as chemistry, biology, physics and geology.</p> Signup and view all the answers

What is Biology?

<p>Biology is a branch of natural science which studies about <strong>living things</strong>.</p> Signup and view all the answers

What is Chemistry?

<p>Chemistry is a branch of natural science which deals with the properties, composition, structure and transformation of substances.</p> Signup and view all the answers

What is Physics?

<p>Physics is the branch of natural science. It is the study of the nature of matter, energy and their interactions.</p> Signup and view all the answers

The natural science disciplines are:

<p>all of the above (D)</p> Signup and view all the answers

The branches of natural science study the composition of compounds, and the processes taking place in organisms, respectively, are:

<p>chemistry and biology (B)</p> Signup and view all the answers

Which one of the following is true about Science?

<p>All (C)</p> Signup and view all the answers

Which one of the following is true about Indigenous knowledge?

<p>It incorporates local people's knowledge's (D)</p> Signup and view all the answers

World famous scientists who discovered law of motion and gravity

<p>Isaac Newton (A)</p> Signup and view all the answers

Which one of the following is NOT allowed in science laboratory?

<p>Wearing any type of cloth and shoes (A)</p> Signup and view all the answers

Which of the following laboratory tools used for the approximate measurements of volume of liquids?

<p>measuring cylinder (C)</p> Signup and view all the answers

The type of laboratory equipment categorized under measuring equipment is

<p>Flask (B)</p> Signup and view all the answers

Natural science is the study of nature and natural laws.

<p>True (A)</p> Signup and view all the answers

Biology, Physics and chemistry do not share common areas of study.

<p>False (B)</p> Signup and view all the answers

Technology makes life easier or more pleasant and work more productive.

<p>True (A)</p> Signup and view all the answers

The study of living things is the concern of

<p>biology (C)</p> Signup and view all the answers

What branch of natural science studies the nature of matter, energy and their interaction?

<p>physics (D)</p> Signup and view all the answers

The famous Ethiopian scientist who discovered a natural treatment to schistosomiasis or bilharzia disease is

<p>Dr. Aklilu Lemma (C)</p> Signup and view all the answers

Which of the following is NOT a laboratory safety rule?

<p>You should add water to Acid. (A)</p> Signup and view all the answers

What is a systematic method of gaining knowledge about the physical and natural world?

<p>Science (B)</p> Signup and view all the answers

Laboratory is the places where ______ in science is performed

<p>experiment</p> Signup and view all the answers

A person who study about technology is called a ______

<p>technologist</p> Signup and view all the answers

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Flashcards

Definition of Science

Science is a systematic method of gaining knowledge about the natural world.

Branches of Science

Natural science and social science; includes biology, chemistry, and physics.

Indigenous Science

Knowledge constructed by Indigenous people about their environment.

Conventional Science

Knowledge established by the scientific method and recognized globally.

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Technology

Application of scientific knowledge to create tools and solutions for society.

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Laboratory Equipment

Tools used in laboratories to perform experiments safely and effectively.

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Physical Change

A change in state or appearance but not in composition.

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Chemical Change

A change that transforms one substance into another.

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Postulates of Particle Theory

Matter is made of particles, which are in constant motion with spaces between them.

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Diffusion

Movement of particles from areas of high concentration to low concentration.

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States of Matter

Solid, liquid, gas; characterized by particle arrangement and motion.

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Solids

Matter with closely packed particles that have a definite shape and volume.

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Liquids

Matter with particles less tightly packed, taking the shape of their container.

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Gases

Matter with widely spaced particles that fill their container completely.

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Melting

The process where a solid turns into a liquid by adding heat.

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Freezing

The process where a liquid turns into a solid by removing heat.

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Boiling

The process where a liquid turns into a gas at its boiling point.

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Condensation

The process where a gas turns into a liquid by losing heat.

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Element

A pure substance that cannot be broken down into simpler substances.

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Compound

A substance made from two or more different elements bonded together.

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Homogeneous Mixture

A mixture with a consistent composition throughout.

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Heterogeneous Mixture

A mixture with varying composition and properties.

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Flammability

A chemical property indicating how easily a substance can ignite.

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Reactivity

A chemical property showing how a substance interacts with others.

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Density

A measurable physical property defined as mass per unit volume.

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Ethics in Science

Moral principles guiding scientific research and practice.

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Scientific Method

A systematic process of inquiry to acquire knowledge.

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Chemical Properties

Characteristics that determine how a substance can change into a new substance.

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Physical vs Chemical Properties

Physical properties can be observed without changing composition; chemical properties cannot.

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Study Notes

General Science Grade 7 Student Textbook

  • Textbook is for Grade 7 students
  • Published by Southern Nations, Nationalities, and Peoples Regional State Education Bureau
  • Contains units on Basic Concepts of Science, Matter in Our Surrounding, Elements, Compound and Chemical Reaction, Cells as the Basis of Life, Earth in Space and Motion, Force, Energy and Energy Resources
  • Includes tables of contents, author and evaluator details, and adopter details
  • Contains learning outcomes for each unit
  • Includes activities, exercises, and figures related to the topics

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