Jss3 third Term basic science past questions and answers

Jss3 third Term basic science past questions and answers

What is the chemical formula for table salt (sodium chloride)?

A) NaCl

B) H2O

C) CO2

D) KCl

Answer: A) NaCl

Which planet is known for its prominent ring system?

A) Earth

B) Venus

C) Saturn

D) Uranus

Answer: C) Saturn

What is the process of plants losing water through tiny openings in their leaves?

A) Transpiration

B) Perspiration

C) Respiration

D) Evaporation

Answer: A) Transpiration

What is the study of the behavior and properties of matter and energy called?

A) Biology

B) Chemistry

C) Geology

D) Physics

Answer: B) Chemistry

Which gas is responsible for the greenhouse effect and global warming?

A) Oxygen

B) Nitrogen

C) Carbon dioxide

D) Hydrogen

Answer: C) Carbon dioxide

What is the unit of measurement for energy?

A) Volt

B) Watt

C) Ampere

D) Joule

Answer: D) Joule

Which element is the most abundant in Earth's crust?

A) Iron

B) Oxygen

C) Silicon

D) Hydrogen

Answer: B) Oxygen

What is the process of changing a liquid into a gas at or below its boiling point?

A) Sublimation

B) Condensation

C) Evaporation

D) Melting

Answer: B) Condensation

What is the unit of measurement for electric potential difference?

A) Ohm

B) Ampere

C) Volt

D) Watt

Answer: C) Volt

What is the chemical symbol for copper?

A) Cr

B) Ca

C) Cu

D) Co

Answer: C) Cu

Which gas is responsible for the Earth's protective ozone layer in the stratosphere?

A) Oxygen

B) Nitrogen

C) Ozone

D) Carbon dioxide

Answer: C) Ozone

What is the process of a solid changing directly into a gas without passing through the liquid phase?

A) Sublimation

B) Condensation

C) Evaporation

D) Melting

Answer: A) Sublimation

Which of the following is an example of a renewable source of energy derived from flowing water?

A) Coal

B) Natural gas

C) Hydroelectric power

D) Nuclear power

Answer: C) Hydroelectric power

What is the chemical symbol for potassium?

A) Pt

B) K

C) Ps

D) Pm

Answer: B) K

Which part of the human brain is responsible for controlling vital functions like breathing and heart rate?

A) Cerebrum

B) Cerebellum

C) Medulla oblongata

D) Hypothalamus

Answer: C) Medulla oblongata

What is the process by which plants and animals reproduce and pass on their traits to the next generation?

A) Photosynthesis

B) Germination

C) Reproduction

D) Digestion

Answer: C) Reproduction

What is the term for the change in direction of a light ray as it passes from one medium into another?

A) Reflection

B) Refraction

C) Diffraction

D) Absorption

Answer: B) Refraction

Which gas do humans inhale and use in respiration?

A) Nitrogen

B) Oxygen

C) Carbon dioxide

D) Hydrogen

Answer: B) Oxygen

What is the process of plants and animals taking in oxygen and releasing carbon dioxide?

A) Photosynthesis

B) Respiration

C) Digestion

D) Fermentation

Answer: B) Respiration

What is the layer of the Earth's atmosphere that contains the ozone layer and is above the troposphere?

A) Troposphere

B) Stratosphere

C) Mesosphere

D) Exosphere

Answer: B) Stratosphere