BASIC SCIENCE
JUNIOR SECONDARY SCHOOLS
FIRST TERM EXAMINATION
CLASS – BASIC 9 (JSS 3)
SECTION A
Answers all the questions in this section.
1. The highest layer of ozone in the atmosphere are in the __________________.
(a) stratosphere
(b) troposphere
(c) mesosphere
(d) thermosphere
2. Some illegal drugs that may be used legally if prescribed by a Doctor are categorized as
__________________.
(a) Prescription
(b) Description
(c) Prescription only
(d) Description only
3. The full meaning of NAFDAC is
______________________________________________________________.
4. NDLEA stands for
______________________________________________________________.
5. All these are importance of family tree except _______________________.
(a) intelligence
(b) resemblance
(c) disease
(d) all of the above
6. All these cause soli erosion except _______________________.
(a) overgrazing
(b) deforestation
(c) ploughing up and down the slope
(d) ploughing across the slope
7. _______________________ is the cheapest method of clearing land.
(a) hand
(b) machinery
(c) bush burning
(d) animals
8. All these are the effects of bush burning except _______________________.
(a) loss of biodiversity
(b) habitat loss
© harmful smoke
(d) climate change
9. According to the United Nations estimate, Nigeria lost about __________________ million
hectares of forest per year between2005 and 2010.
(a) 1
(b) 2
(c) 3
(d) 4
10. All these are reasons for deforestation except __________________.
(a) logging
(b) agricultural expansion
(c) infrastructural development
(d) all of the above
11. All these geographical zones are prone to desertification except __________________.
(a) Kebbi state
(b) Sokoto state
(c) Bauchi state
(d) Kaduna state
12. Low level zoznes can also be called __________________.
(a) mespphere
(b) thermosphere
(c) stratosphere
(d) troposphere
13. The chemical formula for ozone is __________________.
(a) O2
(b) O3
(c) OH
(d) HNO3
14. CFC is the short form for ____________________________________.
15. ozone is present in low concentrations __________________.
16. The major cause of deforestation in Nigeria is __________________.
(a) agricultural expansion
(b) felling of trees
(d) infrastructural development
(d) urbanization
17. Which of these statement (s) is/are correct on controlling ozone depletion?
(a) regulate CFC use
(b) reduce bush burning
© extra caution while cooking foods in the house
(d) all of the above
18. Family genealogy is also known as family tree. True or False
19. The following are major types of resources from plants except __________________.
(a) food crops
(b) textile materials
(c) wood crops
(d) hide and skin
20. Rays of light which are sent back from a surface are called __________________.
(a) normal
(b) incident
(c) refracted
(d) reflected
Get more on… Second Term examination Basic Science Basic 9 (JSS 3)
Section B – Theory
Answer all the questions in this section.
1a. Describe five adverse effects of drug use on youths and the family.
1b. Enumerate the activities of one national drug control agency of your choice.
2. As a government representative in your state, educate your community members on flooding by:
I. telling them what flooding is
II. stating the causes of flooding
III. describing how it could be prevented /controlled in your community.
IV. stating the effects of flooding
3a. List four (4) major types of resources from plants.
3b. Mention four resources from animals.
3c. Mention two resources that medicinal plants can be used to cure (the plants and )
Diseases.
4a. Distinguish between dominant trait and recessive trait with examples.
4b. State the importance of family traits.
4c. Define the following;
I. Genes
II. Trait
III. Family genealogy.
Good Luck