BECE 2023 Integrated Science Questions by LRH

BECE 2023 Integrated Science Questions by LRH.

This study guide provides a comprehensive overview of the topics in integrated science for the Basic Education Certificate Examination (BECE) in 2023. The topics covered include atomic number and atomic structure, ions, the living cells, heat energy, physical and chemical change, simple machines, and agricultural tools.

The guide contains 20 theory questions and some multiple choice questions to help students prepare for the examination.

Theory Questions: BECE 2023 Integrated Science Questions

1. What is the significance of atomic number in the periodic table?
2. What is the structure of an atom, and what are its main components?
3. What is an ion, and how is it different from a neutral atom?
4. Describe the structure of a living cell.
5. What is heat energy, and how is it measured?
6. How does heat energy transfer from one object to another?
7. What is the difference between physical and chemical changes?
8. Give an example of a physical change and a chemical change.
9. What is a simple machine, and how does it work?
10. What are the six types of simple machines?
11. What is mechanical advantage, and how is it calculated?
12. What is an agricultural tool, and how is it used in farming?
13. What is the importance of using appropriate agricultural tools in farming?
14. What is the function of a plow in farming?
15. What is a harrow, and how is it used in farming?
16. What is a hoe, and how is it used in farming?
17. What is a sickle, and how is it used in farming?
18. What is a thresher, and how is it used in farming?
19. What is a cultivator, and how is it used in farming?
20. What is a sprayer, and how is it used in farming?

Multiple Choice Questions

1. What is the atomic number of hydrogen?

a. 1

b. 2

c. 3

d. 4

2. What is the main component of an atom?

a. Proton

b. Neutron

c. Electron

d. Nucleus

3. What is the charge of a positively charged ion?

a. Negative

b. Positive

c. Neutral

d. None of the above

4. What is the structure of a living cell?

a. Cell membrane and cytoplasm

b. Nucleus and cytoplasm

c. Cell membrane and nucleus

d. Nucleus and cell membrane

5. What is heat energy measured in?

a. Joules

b. Watts

c. Amperes

d. Volts

6. How does heat energy transfer from one object to another?

a. Conduction

b. Convection

c. Radiation

d. All of the above

7. What is a physical change?

a. Change in chemical composition

b. Change in size, shape, or state

c. Change in temperature

d. None of the above

8. What is a simple machine?

a. Machine that performs one type of work

b. Machine that performs multiple types of work

c. Machine that performs no work

d. Machine that performs work without effort

9. What is the function of a plow in farming?

a. To till the soil

b. To harvest crops

c. To transport crops

d. To spray crops

10. What is the main use of a harrow in farming?

a. To till the soil

b. To level the soil

c. To transport crops

d. To spray crops

11. What is a hoe used for in farming?

a. To till the soil

b. To plant seeds

c. To transport crops

d. To spray crops

12. What is a sickle used for in farming?

a. To till the soil

b. To harvest crops

c. To transport crops

d. To spray crops

13. What is a thresher used for in farming?

a. To till the soil

b. To harvest crops

c. To transport crops

d. To spray crops

14. What is a cultivator used for in farming?

a. To till the soil

b. To plant seeds

c. To transport crops

d. To spray crops

15. What is a sprayer used for in farming?

a. To till the soil

b. To plant seeds

c. To transport crops

d. To spray crops on crops

16. What is the mechanical advantage of a lever?

a. The ratio of the output force to the input force

b. The ratio of the input distance to the output distance

c. The ratio of the output distance to the input distance

d. None of the above

17. What is the mechanical advantage of a pulley?

a. The ratio of the output force to the input force

b. The ratio of the input distance to the output distance

c. The ratio of the output distance to the input distance

d. None of the above

18. What is the mechanical advantage of a screw?

a. The ratio of the output force to the input force

b. The ratio of the input distance to the output distance

c. The ratio of the output distance to the input distance

d. None of the above

19. What is the mechanical advantage of a wedge?

a. The ratio of the output force to the input force

b. The ratio of the input distance to the output distance

c. The ratio of the output distance to the input distance

d. None of the above

20. What is the mechanical advantage of a wheel and axle?

a. The ratio of the output force to the input force

b. The ratio of the input distance to the output distance

c. The ratio of the output distance to the input distance

d. None of the above

Answers to the Theory Questions on Integrated Science

1. The atomic number of an element is the number of protons in the nucleus of an atom of that element.
2. An atom consists of a nucleus (composed of protons and neutrons) and electrons that orbit around the nucleus.
3. An ion is an atom that has gained or lost one or more electrons, resulting in a net electrical charge.
4. A living cell consists of a cell membrane, cytoplasm, and nucleus.
5. Heat energy is energy that is transferred from one body to another as a result of a difference in temperature. It is measured in joules.
6. Heat energy can transfer from one object to another through conduction, convection, and radiation.
7. A physical change is a change in size, shape, or state of matter without a change in chemical composition. A chemical change is a change in the chemical composition of a substance.
8. An example of a physical change is melting ice. An example of a chemical change is the reaction between baking soda and vinegar.
9. A simple machine is a device that helps to change the magnitude, direction, or point of application of a force. Examples of simple machines include levers, pulleys, screws, wedges, and wheel and axles.
10. A harrow is used to level the soil in farming.

1. A hoe is used to till the soil in farming.
2. A sickle is used to harvest crops in farming.
3. A thresher is used to separate the grain from the straw of harvested crops in farming.
4. A cultivator is used to stir and break up the soil in farming.
5. A sprayer is used to spray crops with pesticides or fertilizers in farming.
6. The mechanical advantage of a lever is the ratio of the output force to the input force.
7. The mechanical advantage of a pulley is the ratio of the output force to the input force.
8. The mechanical advantage of a screw is the ratio of the output distance to the input distance.
9. The mechanical advantage of a wedge is the ratio of the output force to the input force.
10. The mechanical advantage of a wheel and axle is the ratio of the output force to the input force.

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