Integrated Science Questions and Answers - Grade 7 Opener Exams Term 2 2023 Set 1

SECTION A:

Answer all the questions in the section. 

1. A Grade 7 learner at Muungano Junior Secondary was told to draw a tripod stand. Which of the following correctly shows what she drew?
   
2. Mueni saw rules on a laboratory wall. Which one of the following may not be one of the rules she saw?  
   1. Do not taste any chemical.
   2. Serve little amounts of food at a time.
   3. Always wear protective clothing while in here.
   4. Protect your hands using gloves.
3. The symbol below was seen on the wall in a laboratory
   
   Which hazard is the symbol above associated with?
   
   1. Eye hazard.
   2. Fire hazard.
   3. Skin contact hazard. 
   4. Electrical hazard.
4. The following are physical changes that take place during adolescence:
   1. Appearance of pimples on the face.
   2. Broadening of hips.
   3. Deepening of voice.
   4. Increase in weight and size.
   5. Onset of menstruation.
   6. Release of sex cells.
      Which of the changes above take place in both adolescent boys and girls? 
      1. i, iv, v
      2. i, iv, vi
      3. ii, iii, vi
      4. iii, iv, v
   7. The demonstration below was carried out by Grade 6 learners.
      
      What was the function of the cork in this set up? To
      
      1. make the water level visible.
      2. prevent the expanding liquid from pouring out.
      3. make the glass bottle withstand high temperature.
      4. make the experiment more accurate.
5. Telephone wires are made slightly longer in order to
   
   1. withstand harsh outdoor weather conditions.
   2. create room for expansion.
   3. create room for contraction.
   4. easier communication.
6. The pie chart below shows the composition of gases in the air
   
7. The segment labelled Y
   
   1. contains rare gases.
   2. is necessary for seed germination.
   3. can be used by leguminous plants to make proteins.
   4. is used for making electric bulbs.
8. Which letter represents the gas occupying 0.03%?
   
   1. W
   2. X
   3. Y
   4. Z
9. Which of the following parts of the male reproductive system introduces sperms into the vagina during sexual intercourse?
   
   1. Testis.
   2. Glands.
   3. Urethra.
   4. Penis. 

The diagram below represents the female reproductive system.

10. In which of the labelled parts does fertilization take place?
    
    1. P
    2. M
    3. N
    4. O
11. The part labelled M is called
    
    1. birth canal.
    2. fallopian tube.
    3. uterus.
    4. ovary.
12. Which of the following is not a way of conserving water?
    
    1. Mulching.
    2. Pruning.
    3. Harvesting rain water.
    4. Constructing dams.
13. Which of the following is not a disadvantage of friction?
    
    1. Lighting of matchstick.
    2. Production of unnecessary heat.
    3. Making movement difficult.
    4. Wearing and tearing.
14. An aeroplane and a car have one common factor in that they both
    1.  travel on land.
    2. have streamlined shapes.
    3. use the same type of fuel.
    4. travel in the air.
15. All the following are ways of reducing friction except
    
    1. using ball bearings.
    2. increase the force between the surfaces.
    3. lubrication.
    4. making the surface smoother. 
16. Which of the following does not use the idea of reflection of light to operate?
    
    1. Microscope.
    2. Periscope.
    3. Car side mirror.
    4. Car windscreen.
17. Which one of the following levers has the position of the fulcrum, load and effort the same as a wheelbarrow when in use?
    1. Broom.
    2. Crowbar.
    3. Door
    4. Clawhammer.
18. Which of the following parts of the breathing system perform the same function?
    
    1. Lungs and diaphragm.
    2. Nose and trachea.
    3. Mucus and hair.
    4. Bronchi and bronchioles.
19. Korobo visited a public building and saw a ramp beside staircases. What is the use of what he saw? To
    
    1. make all the customers access services.
    2. help the people on wheelchairs access service.
    3. reduce congestion around the building.
    4. enable the workers in the building get into their offices with ease.
20. Which one of the following is an example of a slope? "
    

SECTION B:

Answer all the questions in the spaces provided.

21. A small animal had the following characteristics:
    
    1. Moist and slimy skin.
    2. Moves by hopping.
    3. Lays unfertilized eggs.
    4. Breathes by both lungs and gills depending on age.
       The above characteristics can fit a __________________________
22. Below is a root type.
    
    Name one plant with the root system drawn above.
23. Below is a small animal.
    
    Write one characteristic of the animal drawn above.
24. Which blood vessel carries deoxygenated blood from the heart to the lungs?
25. Which blood group receives blood from all other groups?

MARKING SCHEME

SECTION A

1. D
2. B
3. B
4. B
5. B
6. C
7. B
8. B
9. D
10. C
11. C
12. B
13. A
14. B
15. B
16. D
17. C
18. B
19. B
20. D

SECTION B

21. Frog
22. Maize
23. Moves by gliding
24. Pulmonary artery
25. AB