Jss1 first term Basic science past questions and answers

Question: What is the primary function of the heart?

 

A) Pumping blood

B) Digesting food

C) Filtering air

D) Storing energy

Answer: A) Pumping blood

Question: Which planet is known as the “Red Planet”?

 

A) Earth

B) Mars

C) Jupiter

D) Venus

Answer: B) Mars

Question: What is the chemical symbol for water?

 

A) O2

B) H2O

C) CO2

D) NaCl

Answer: B) H2O

Question: What process converts liquid water into water vapor?

 

A) Condensation

B) Evaporation

C) Precipitation

D) Sublimation

Answer: B) Evaporation

Question: Which gas do plants absorb from the air during photosynthesis?

 

A) Oxygen

B) Nitrogen

C) Carbon dioxide

D) Hydrogen

Answer: C) Carbon dioxide

Question: What is the main function of the respiratory system?

 

A) Pumping blood

B) Filtration of waste

C) Exchange of gases

D) Regulation of body temperature

Answer: C) Exchange of gases

Question: What is the smallest unit of life?

 

A) Cell

B) Atom

C) Molecule

D) Organism

Answer: A) Cell

Question: What causes the seasons on Earth?

 

A) Tilt of the Earth’s axis

B) Distance from the Sun

C) Earth’s rotation speed

D) Atmospheric pressure

Answer: A) Tilt of the Earth’s axis

Question: Which of the following is a renewable energy source?

 

A) Coal

B) Solar power

C) Natural gas

D) Nuclear energy

Answer: B) Solar power

Question: What is the force that pulls objects towards the center of the Earth?

 

A) Magnetism

B) Gravity

C) Friction

D) Buoyancy

Answer: B) Gravity

Question: Which sense organ is responsible for hearing?

 

A) Eyes

B) Nose

C) Ears

D) Tongue

Answer: C) Ears

Question: What is the main function of the nervous system?

 

A) Pumping blood

B) Regulating body temperature

C) Transmitting signals

D) Digesting food

Answer: C) Transmitting signals

Question: What is the chemical symbol for oxygen?

 

A) O2

B) H2O

C) O3

D) CO2

Answer: A) O2

Question: Which layer of the Earth is solid and composed mainly of iron and nickel?

 

A) Crust

B) Mantle

C) Outer core

D) Inner core

Answer: D) Inner core

Question: What is the process by which plants make their own food using sunlight?

 

A) Respiration

B) Photosynthesis

C) Transpiration

D) Germination

Answer: B) Photosynthesis

Question: What is the study of rocks called?

 

A) Meteorology

B) Geology

C) Astronomy

D) Botany

Answer: B) Geology

Question: Which gas do humans primarily exhale during respiration?

 

A) Oxygen

B) Carbon dioxide

C) Nitrogen

D) Hydrogen

Answer: B) Carbon dioxide

Question: What is the main function of the excretory system?

 

A) Digesting food

B) Circulating blood

C) Removing waste from the body

D) Regulating body temperature

Answer: C) Removing waste from the body

Question: In the water cycle, what is the process of water falling from the atmosphere to the Earth’s surface?

 

A) Evaporation

B) Condensation

C) Precipitation

D) Transpiration

Answer: C) Precipitation

Question: What is the main component of the Earth’s atmosphere?

 

A) Oxygen

B) Nitrogen

C) Carbon dioxide

D) Hydrogen

Answer: B) Nitrogen