JSS1 Second Term Basic Science Past Questions And Answers
20 Basic Science questions for JSS1 Second Term, each with options and answers:
Question: Which gas is essential for respiration in humans?
A) Nitrogen
B) Oxygen
C) Carbon Dioxide
D) Hydrogen
Answer: B) Oxygen
Question: What is the smallest unit of an element that retains its properties?
A) Molecule
B) Atom
C) Cell
D) Compound
Answer: B) Atom
Question: In the water cycle, what process involves water turning into vapor?
A) Condensation
B) Evaporation
C) Precipitation
D) Sublimation
Answer: B) Evaporation
Question: What is the SI unit for measuring temperature?
A) Kelvin
B) Celsius
C) Fahrenheit
D) Joule
Answer: A) Kelvin
Question: Which type of rock is formed from cooling and solidification of lava?
A) Sedimentary
B) Metamorphic
C) Igneous
D) Granite
Answer: C) Igneous
Question: What is the process of changing from a liquid to a gas at temperatures below the boiling point called?
A) Boiling
B) Freezing
C) Condensation
D) Sublimation
Answer: C) Condensation
Question: What is the role of chlorophyll in photosynthesis?
A) Absorbing sunlight
B) Producing oxygen
C) Breaking down glucose
D) Storing energy
Answer: A) Absorbing sunlight
Question: Which planet is known for its prominent ring system?
A) Jupiter
B) Saturn
C) Neptune
D) Uranus
Answer: B) Saturn
Question: What is the process by which plants lose water through small openings in their leaves?
A) Transpiration
B) Respiration
C) Absorption
D) Photosynthesis
Answer: A) Transpiration
Question: What is the main function of the nervous system?
A) Circulation
B) Digestion
C) Coordination
D) Reproduction
Answer: C) Coordination
Question: Which type of energy is stored in food?
A) Potential energy
B) Kinetic energy
C) Chemical energy
D) Thermal energy
Answer: C) Chemical energy
Question: What is the process of the Earth orbiting around the Sun?
A) Revolution
B) Rotation
C) Axial tilt
D) Orbiting
Answer: A) Revolution
Question: Which gas is responsible for the depletion of the ozone layer?
A) Carbon Dioxide
B) Methane
C) Chlorofluorocarbons (CFCs)
D) Nitrous Oxide
Answer: C) Chlorofluorocarbons (CFCs)
Question: What is the process of converting a solid directly into a gas without passing through the liquid state?
A) Evaporation
B) Sublimation
C) Condensation
D) Freezing
Answer: B) Sublimation
Question: What is the main function of the respiratory system?
A) Pumping blood
B) Filtering air
C) Exchanging gases
D) Breaking down food
Answer: C) Exchanging gases
Question: Which layer of the Earth’s atmosphere contains the ozone layer?
A) Troposphere
B) Stratosphere
C) Mesosphere
D) Thermosphere
Answer: B) Stratosphere
Question: What is the chemical symbol for sodium?
A) Na
B) K
C) Mg
D) Ca
Answer: A) Na
Question: Which type of energy is associated with the motion of an object?
A) Potential energy
B) Kinetic energy
C) Chemical energy
D) Nuclear energy
Answer: B) Kinetic energy
Question: What is the process of a substance changing from a gas to a liquid?
A) Sublimation
B) Evaporation
C) Condensation
D) Freezing
Answer: C) Condensation
Question: In the water cycle, what process involves water falling from the atmosphere
to the Earth’s surface?
A) Evaporation
B) Condensation
C) Precipitation
D) Infiltration
Answer: C) Precipitation.
