Jss1 second term Basic science past questions and answers

Here are 20 more JSS1 basic science questions with options and answers:

 

Question: What is the chemical symbol for gold?

 

A) Au

B) Ag

C) Fe

D) Cu

Answer: A) Au

Question: Which gas do plants release during respiration?

 

A) Oxygen

B) Carbon dioxide

C) Nitrogen

D) Methane

Answer: B) Carbon dioxide

Question: What is the largest planet in our solar system?

 

A) Earth

B) Mars

C) Jupiter

D) Saturn

Answer: C) Jupiter

Question: What is the process by which rocks are broken down into smaller particles by wind, water, or ice?

 

A) Erosion

B) Deposition

C) Weathering

D) Sedimentation

Answer: C) Weathering

Question: Which part of the plant is responsible for photosynthesis?

 

A) Roots

B) Leaves

C) Stem

D) Flowers

Answer: B) Leaves

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

 

A) Protecting internal organs

B) Pumping blood

C) Producing hormones

D) Digesting food

Answer: A) Protecting internal organs

Question: In the water cycle, what is the process of water turning into vapor?

 

A) Condensation

B) Precipitation

C) Evaporation

D) Transpiration

Answer: C) Evaporation

Question: What is the basic unit of all living organisms?

 

A) Atom

B) Cell

C) Molecule

D) Tissue

Answer: B) Cell

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

 

A) Earth

B) Neptune

C) Venus

D) Uranus

Answer: A) Earth

Question: What is the process by which plants take in water from the soil?

 

A) Transpiration

B) Photosynthesis

C) Absorption

D) Germination

Answer: C) Absorption

Question: What is the role of chlorophyll in photosynthesis?

 

A) Absorbing water

B) Absorbing sunlight

C) Producing oxygen

D) Transporting nutrients

Answer: B) Absorbing sunlight

Question: Which layer of the Earth’s atmosphere protects us from harmful solar radiation?

 

A) Troposphere

B) Stratosphere

C) Mesosphere

D) Thermosphere

Answer: B) Stratosphere

Question: What is the function of the circulatory system?

 

A) Producing hormones

B) Pumping blood

C) Excreting waste

D) Absorbing nutrients

Answer: B) Pumping blood

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

 

A) Iron

B) Silicon

C) Oxygen

D) Aluminum

Answer: B) Silicon

Question: Which gas do humans primarily inhale during respiration?

 

A) Oxygen

B) Carbon dioxide

C) Nitrogen

D) Methane

Answer: A) Oxygen

Question: What is the process of converting solid directly to gas without passing through the liquid state?

 

A) Evaporation

B) Sublimation

C) Condensation

D) Melting

Answer: B) Sublimation

Question: What is the function of the lens in the human eye?

 

A) Filtering light

B) Focusing light

C) Detecting color

D) Controlling pupil size

Answer: B) Focusing light

Question: Which gas is responsible for the greenhouse effect?

 

A) Oxygen

B) Nitrogen

C) Carbon dioxide

D) Methane

Answer: C) Carbon dioxide

Question: What is the main source of energy for the Earth?

 

A) Wind

B) Solar radiation

C) Fossil fuels

D) Nuclear power

Answer: B) Solar radiation

Question: Which instrument is used to measure temperature?

 

A) Barometer

B) Hydrometer

C) Thermometer

D) Microscope

Answer: C) Thermometer