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INTEGRATED SCIENCE

ANSWERS TO EXERCISE 9 QUESTIONS




27 - 07 - 2020
EXERCISE 10
20 - 07 - 2020
EXERCISE 9
WEEK 7 & 8 ANSWERS
WEEK 12
EXERCISE 8
WEEK 11
EXERCISE 7

INTEGRATED SCIENCE – JH 1
EXERCICSE 6-----WEEK 6
ANSWER ALL QUESTIONS

QUESTION 1
a. Explain the term digestion.
b. State the end products of digestion of each of the following food
substances.
i. Carbohydrates
ii. Protein
iii. Fats and oil
c. Name the enzyme present in saliva and state its function.
d. By what process does the heat of the sun reach the earth?

QUESTION 2
a.An aluminium bowl placed on a table is filled with hot water. Name the processes by which heat is lost by the bowl.
b. Give one reason why wood is used as a handle for some cooking utensils.
c. List separately the vegetative parts and reproductive parts of a flowering plant.
d.i. What are alloys?
ii. Give two examples of alloys and state their constituents

QUESTION 3
a. Explain the term excretion.
b. State the organs in human being which excrete the following waste products:
i. Sweat
ii. Carbon dioxide
iii. Urine
c. State three conditions necessary for the germination of seed.
d. Give two features which can be passed on from parents to children.

QUESTION 4
a. List the various planets of the solar system in the order they occur starting with the planet nearest to the sun.
b. State one difference between the eclipse of the sun and the eclipse of the moon.
c. Draw simple electrical circuits showing the following arrangements;
i. A switch and a light bulb in series with two dry cells in series.
ii. A switch and a light bulb in series with two dry cells in parallel
d. Name two diseases that can be controlled by immunization.


WEEK 5 - EXERCISE 5
INTEGRATED SCIENCE
Answer all questions
PART 1
1.The portion of air which is used in burning is ______________________
2. A torchlight derives its energy from   _________________________
3. A substance which cannot be broken down into simpler substances is called  _____________
4. A mirror is used to direct the sun’s rays onto the classroom wall by  ________________
5. Heat from the sun reaches the earth by  _________________
6. The shape of a child’s nose may resemble that of the mother due to
A. heredity     B. similarity   C. reflection  D. familiarity    E. attraction
7. Plants with thorns are not usually eaten by animals. The thorns therefore
A. assist the plant to grow     B. make the plant strong      C. render the plant poisonous
D. protect the plant     E. make the plant unattractive
8. Leguminous crops such as beans may often be cultivated to 
A. add humus to the soil    B. add nitrogen to the soil     C. add protein to the soil
C. make the soil loamy     E. increase the calcium content of the soil
9. Disposal of sewage into a river which supplies water for domestic use may lead to an outbreak of  
A. malaria       B. cholera       C. guinea worm      D. river blindness      E. tuberculosis
10. A mixture of raw starch and water is best separated by 
A. boiling    B. distillation   C. decantation      D. winnowing     E. crystallization

PART 2
1. Draw a well labelled diagram of a flower
2. Of what importance is the flower to the plant?
3. Name the sense organs and state one function of each.
4. What is meant by a satellite?
5. State one difference between natural and an artificial satellite
6. State two uses of artificial satellite
7. Give two differences between the mass and weight of a body.
WEEK 4 - EXERCISE FOUR (4)


INTEGRATED SCIENCE
EXERCICSE 2 (WEEK 2)
JHS 1
ANSWER ALL QUESTIONS

1.List in correct order the basic levels of organization in a multicellular organism. 

2. Name the main organs of the following systems:
a. circulatory system          b. digestive system      c. respiratory system    d. excretory system
3. State two factors that may affect the growth of a plant

4. Give two characteristics of a liquid. 

5. State two characteristics of non-living things.

6. An aluminium  cube with side measuring 2m has a mas  of 24kg. Calculate the density of the aluminium.

7. Ice floats on water because ________________________

8. Which of the soil types can hold the least amount of water?.

9. The most productive soil in agriculture is____________________

10. The mineral salts in dead organisms become available to the soil through ______________

11. Each layer of soil profile is known as ______________

12. The part of the plant where pollination occurs is the ______________

13. List the vegetative parts of a flowering plant.

14. List the reproductive parts of flowering plants. 

15. Distinguish between self and cross pollination.

16. State two importance of seed dispersal.

17. What is mixed farming?

18. What is mixed cropping?

19. State two ways in which crop rotation is important in crop production

20. Energy stored in food is referred to as ___________________





INTEGRATED SCIENCE
EXERCICSE 2 (WEEK 2)
JHS 1
ANSWER ALL QUESTIONS

1.List in correct order the basic levels of organization in a multicellular organism. 
2. Name the main organs of the following systems:
a. circulatory system          b. digestive system      c. respiratory system    d. excretory system
3. State two factors that may affect the growth of a plant.
4. Give two characteristics of a liquid. 
5. State two characteristics of non-living things.
6. An aluminium  cube with side measuring 2m has a mas  of 24kg. Calculate the density of the aluminium.
7. Ice floats on water because ________________________
8. Which of the soil types can hold the least amount of water?.
9. The most productive soil in agriculture is____________________
10. The mineral salts in dead organisms become available to the soil through ______________
11. Each layer of soil profile is known as ______________
12. The part of the plant where pollination occurs is the ______________
13. List the vegetative parts of a flowering plant.
14. List the reproductive parts of flowering plants. 
15. Distinguish between self and cross pollination.
16. State two importance of seed dispersal.
17. What is mixed farming?
18. What is mixed cropping?
19. State two ways in which crop rotation is important in crop production.
20. Energy stored in food is referred to as ___________________

JHS 1
INTEGRATED SCIENCE
ANSWER ALL QUESTIONS
1. Leaching of nutrients from the soil leads to soil _____________
2. Amino acids are the end products of the digestion of _________
3. State two similarities between science and technolgy.
4. Distinguish between natural science and social science.
5. The mass of a piece of stone is 45kg. Calculate the weight of the stone.
6. Draw and label a diagram to show how eclipse of the sun is formed.
7. What are ornamental plants?
8. State one use each for the following laboratory set up apparatus:
a. Volumetric flask b. Beaker c. Funnel d. Stirrer e.Wash bottle
9.Define density of a substance.
10. A piece of stone of mass 500 kg was dropped in a measuring cylinder containing water.The level of water increased from 45cm3 mark to 73cm3 mark.Find the density of the stone.
11. State two applications of density.
12. State three characteristics of an image formed by a plane mirror.
13. Distinguish between regular and diffused reflections
14. Explain the following:
a. Viable speeds b. Self- dispersal
15. Give two importance of drainage in vegetable crop production.
16. What is ecological farming?
17. State three advatages of ecological farming.
18. State two factors that may affect the growth of a plant.
19. Explain how animals pollinate flowers.
20. State one function each for the following parts of a flower:
a. calyx b. carpel

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