1. Elements in the periodic table are arranged mainly in order of increasing...

Atomic mass only Atomic number Number of neutrons Boiling point

2. Which of the following best describes the properties of metals?

Dull, brittle, poor conductors of heat and electricity Shiny, malleable, and good conductors of heat and electricity Soft, transparent, and do not conduct electricity Gaseous at room temperature and non-reactive

3. Which of these is a property of non-metals?

Good conductors of electricity Malleable and ductile Poor conductors of heat and electricity High density and shiny

4. A chemical reaction in which a substance combines with oxygen, often releasing heat and light, is called...

Reduction Combustion Neutralisation Electrolysis

5. The process of using an electric current to break down a compound into its elements is called...

Combustion Electrolysis Distillation Fermentation

6. In the nitrogen cycle, which bacteria convert nitrogen gas in the air into a form that plants can use?

Decomposer bacteria Nitrogen-fixing bacteria Denitrifying bacteria Photosynthetic bacteria

7. The continuous process by which rocks are formed, broken down, and reformed over time is called the...

Water cycle Carbon cycle Rock cycle Nitrogen cycle

8. A group of different populations of organisms living and interacting in a particular area, along with the physical environment, is best described as a/an...

Community Ecosystem Biome Species

9. In a food chain, organisms that make their own food using sunlight, such as green plants, are called...

Primary consumers Producers Decomposers Secondary consumers

10. Which gland in the human body, located in the neck, produces hormones that regulate metabolism?

Pituitary gland Thyroid gland Adrenal gland Pancreas

11. The gland often referred to as the 'master gland' because it controls the activities of other glands in the body is the...

Thyroid gland Pancreas Pituitary gland Adrenal gland

12. Which part of the female reproductive system is the site where fertilisation of the egg by a sperm normally takes place?

Uterus Ovary Fallopian tube Cervix

13. According to Newton's first law of motion, an object at rest will remain at rest unless...

It is heated A force acts on it It changes colour Time passes

14. The rate at which work is done, or energy is transferred, is called...

Force Power Pressure Velocity

15. The amount of work done when a force of 1 newton moves an object through a distance of 1 metre is equal to...

1 watt 1 joule 1 newton 1 pascal

16. A device that converts electrical energy into mechanical (kinetic) energy is called a/an...

Generator Transformer Electric motor Electromagnet

17. A device that converts mechanical energy into electrical energy is called a/an...

Electric motor Generator Transformer Resistor

18. A temporary magnet formed by wrapping a coil of wire carrying an electric current around a soft iron core is called a/an...

Permanent magnet Electromagnet Bar magnet Compass

19. Which of the following is an example of a renewable energy source that Ghana is investing in to reduce reliance on fossil fuels?

Crude oil Natural gas Solar and wind energy Coal

20. The gradual increase in the Earth's average temperature, largely caused by human activities that release greenhouse gases, is called...

Ozone depletion Global warming Acid rain Eutrophication

21. Improper disposal of plastic waste in Ghana's water bodies and drains commonly leads to which environmental problem?

Increased soil fertility Flooding and water pollution Improved fish breeding Reduced greenhouse gases

22. Which of the following practices best supports proper waste management in a community?

Burning refuse in the open Dumping waste into rivers Segregating and recycling waste Throwing waste into gutters

23. Which type of rock is formed from layers of sediment that have been compressed and cemented together over time, and often contains fossils?

Igneous rock Sedimentary rock Metamorphic rock Volcanic rock

24. Rocks that have been changed by intense heat and pressure deep within the Earth, without melting completely, are called...

Igneous rocks Sedimentary rocks Metamorphic rocks Mineral rocks

25. Which vitamin, obtained mainly from sunlight and needed for strong bones and teeth, can be deficient in people who spend little time outdoors?

Vitamin A Vitamin B Vitamin C Vitamin D

26. The scientific process of testing an idea through observation and experimentation, following organised steps, is called...

A theory A hypothesis The scientific method A law

27. An educated guess or possible explanation for an observation, which can be tested through experiments, is called a...

Theory Hypothesis Law Variable

28. Which of the following best explains why family planning and reproductive health education are important topics in JHS Science?

They help students understand responsible decision-making about reproduction and health They are only useful for adults They have no connection to biology They replace the need for proper nutrition

29. Which of the following is an example of an ecological problem caused by overfishing in Ghana's coastal waters?

Increased fish population Depletion of fish stocks and disruption of the marine food chain Improved water quality Reduced coastal erosion

30. The layer of the atmosphere that contains ozone, which absorbs and filters out most of the sun's harmful ultraviolet radiation, is called the...

Troposphere Stratosphere (ozone layer) Mesosphere Exosphere