Science for JSS 3

Which of these angles is complementary to 70?

• 20^o

• 30^o 

• 60^o.

• 90^o

Traits that are seen in every generation are known as   

• Recessive traits.

• Dominant traits.

• Project traits

• Albinism

Which of the following is NOT an agent of soil erosion     

• Water

• Wind.

• Soil

• Ice

Erosion can be caused by the following factors, except. ------------ .

• Overcultivation.

• Topography of the land.

• Nature of the soil.

• Bush fallowing.

Express 0.0040752 to three significant figures.

• 0.00475

• 0.0041

• 0.00408

• 0.004075

Express 10000800 in standard form.

• 1.00008 X 10⁷

• 1.00008 X 10⁵

• 1.0008 X 10³

• 1.0008 X 10^-5

Find the range of the following set of numbers: 26, 21, 22, 24, 22, 23, 29.

• 8

• 7

• 4

• 3

Beneficiary and useful things we get from plants and animals are called   

• Minerals.

• Protein.

• Resources.

• Food crops

Evaluate 23² - 7²

• 460

• 480

•  529.

• 580

Simplify the following: 3abc + 6bc + 7c – 4bc - 2c

• 2abc + 4bc – 5c

•  3abc + 2bc + 5c.

• 4abc + 3bc – 5c

• 8abc – 4bc + 4c