2781. What is the change from gas to liquid called?
✅ B. Condensation
a: Sublimation | b: Condensation | c: Melting | d: Evaporation Read more
Everyday Science MCQs – Page 140
2782. Which natural satellite orbits Earth?
✅ C. The Moon
a: Phobos | b: Europa | c: The Moon | d: Titan Read more
2783. What is the approximate speed of light in vacuum?
✅ D. 300,000 km/s
a: 30,000 km/s | b: 3,000 km/s | c: 3,000,000 km/s | d: 300,000 km/s Read more
2784. Which instrument measures temperature?
✅ A. Thermometer
a: Thermometer | b: Voltmeter | c: Barometer | d: Seismometer Read more
2785. What is the nearest star to Earth?
✅ B. The Sun
a: Polaris | b: The Sun | c: Sirius | d: Proxima Centauri Read more
2786. Which instrument measures atmospheric pressure?
✅ A. Barometer
a: Barometer | b: Hygrometer | c: Thermometer | d: Anemometer Read more
2787. What is the process of liquid changing into gas called?
✅ B. Evaporation
a: Condensation | b: Evaporation | c: Deposition | d: Freezing Read more
2788. What is the main gas in Earth’s atmosphere?
✅ A. Nitrogen
a: Nitrogen | b: Carbon dioxide | c: Oxygen | d: Argon Read more
2789. Which vitamin can the skin produce with adequate sunlight exposure?
✅ D. Vitamin D
a: Vitamin C | b: Vitamin B12 | c: Vitamin K | d: Vitamin D Read more
2790. Which layer helps protect Earth from much of the Sun’s ultraviolet radiation?
✅ A. Ozone layer
a: Ozone layer | b: Inner core | c: Troposphere only | d: Mantle Read more
2791. Which organ pumps blood around the human body?
✅ B. Heart
a: Liver | b: Heart | c: Lung | d: Kidney Read more
2792. At standard atmospheric pressure, water boils at what temperature?
✅ A. 100°C
a: 100°C | b: 150°C | c: 50°C | d: 0°C Read more
2793. What is the SI unit of force?
✅ B. Newton
a: Pascal | b: Newton | c: Watt | d: Joule Read more
2794. What force pulls objects toward Earth?
✅ D. Gravity
a: Magnetism | b: Friction | c: Buoyancy | d: Gravity Read more
2795. Which planet is known as the Red Planet?
✅ B. Mars
a: Venus | b: Mars | c: Mercury | d: Jupiter Read more
2796. Which gas do plants absorb during photosynthesis?
✅ D. Carbon dioxide
a: Oxygen | b: Nitrogen | c: Hydrogen | d: Carbon dioxide Read more
2797. What is the chemical formula of water?
✅ C. H2O
a: CO2 | b: NaCl | c: H2O | d: O2 Read more
2798. Practice check: Choose the correct environmental science answer: what is the ozone layer’s main protective role?
✅ D. Absorbing much of the Sun's harmful ultraviolet radiation
a: Producing Earth's gravity | b: Blocking all visible light | c: Creating all rainfall | d: Absorbing much of the Sun's harmful ultraviolet radiation Read more
2799. Practice check: Choose the correct environmental science answer: what is a circular economy intended to do?
✅ B. Keep products and materials in use and reduce waste
a: Stop all repair | b: Keep products and materials in use and reduce waste | c: Maximize single-use products | d: Increase landfill only Read more
2800. Practice check: Choose the correct environmental science answer: what is a wetland?
✅ B. An area where water covers or saturates the soil for part or all of the year
a: A dry dune | b: An area where water covers or saturates the soil for part or all of the year | c: A glacier peak | d: A volcanic crater only Read more