MID TERM TEST FIRST TERM PRIMARY 4 BASIC SCIENCE AND TECHNOLOGY

               CLASS: GRADE 4             SUBJECT: BASIC SCIENCE AND TECHNOLOGY             TIME:

OBJECTIVES

1. Air Contaminants are also called air pollutants (true/false)
2. mining activities brings about ____________ pollution (a) water (b) air (c) land (d) noise

3. Land pollution can cause unpleasant smells (true/false)
4. What type of pollution does loud speaker produce (a) land (b) air (c) noise (d) water
5. These are agents of erosion except ____________ (a) wind (b) water (c) human (d) waves
6. Soil tilling means _______________ of soil (a) burning (b) tilling(c) gathering (d) breaking up
7. The following can be used to control erosion except (a) concrete mat (b) plastic Fence (c) wooden fibre mat (d) water

8. Healthy environment is a _________________ environment (a) dirty (b) unsafe(c) bad (d) clean 
9. _______________ environment is unhealthy environment (a) bad quality (b) good (c) unhealthy (d) comfortable 

10. Unhealthy environment is likely to cause illness or poor health (true/false)
11. Which of the following is not a solid waste (a) nylon (b) broken bottle (c) water used for washing (d) banana peel
12. ____________________ is a solid waste (refuse/sewage)
13. ____________________ is a liquid waste (refuse/sewage)
14. ____________________ means to treat things that have already been used so that they can be used again (a) Incinerating (b) recycling (c) land filling (d) compositing

THEORY PART 

1a. Define pollution (2 MARKS)

1. Mention the 4 types of pollution (4 MARKS)
2. What are pollutants (2 MARKS)
3. List the forms of pollutant (3 MARK)
4. mention 3 sources of water pollutants (3 MARKS) 
5. what is erosion (2 MARKS)
6. list 5 causes of erosion (5 MARKS)
7. Mention 5 equipment’s needed to maintain good quality environment (5 MARKS)
8. Define waste (2 MARKS) b. list the types of waste (2 MARKS)