3421. Practice check: Which option answers this correctly: what is the main source of energy for Earth’s climate system?
✅ C. The Sun
a: Tides alone | b: Earth's core alone | c: The Sun | d: The Moon Read more
Everyday Science MCQs – Page 172
3422. Practice check: Which option answers this correctly: which process do green plants use to make sugars using light?
✅ D. Photosynthesis
a: Fermentation | b: Digestion | c: Respiration only | d: Photosynthesis Read more
3423. Practice check: Which option answers this correctly: which material is a good electrical conductor?
✅ A. Copper
a: Copper | b: Dry wood | c: Glass | d: Rubber Read more
3424. Practice check: Which option answers this correctly: which type of wave can travel through a vacuum?
✅ A. Electromagnetic wave
a: Electromagnetic wave | b: Water wave | c: Sound wave | d: Seismic S-wave Read more
3425. Practice check: Which option answers this correctly: what is the pH of a neutral solution at about 25°C?
✅ C. 7
a: 14 | b: 4 | c: 7 | d: 1 Read more
3426. Practice check: Which option answers this correctly: what is the center of an atom called?
✅ B. Nucleus
a: Isotope cloud | b: Nucleus | c: Electron shell | d: Molecule Read more
3427. Practice check: Which option answers this correctly: which energy source is renewable?
✅ A. Solar energy
a: Solar energy | b: Coal | c: Natural gas | d: Petroleum Read more
3428. Practice check: Which option answers this correctly: what is the change from gas to liquid called?
✅ C. Condensation
a: Melting | b: Sublimation | c: Condensation | d: Evaporation Read more
3429. Practice check: Which option answers this correctly: what is the approximate speed of light in vacuum?
✅ C. 300,000 km/s
a: 3,000,000 km/s | b: 3,000 km/s | c: 300,000 km/s | d: 30,000 km/s Read more
3430. Practice check: Which option answers this correctly: which natural satellite orbits Earth?
✅ D. The Moon
a: Phobos | b: Titan | c: Europa | d: The Moon Read more
3431. Practice check: Which option answers this correctly: what is the nearest star to Earth?
✅ A. The Sun
a: The Sun | b: Sirius | c: Proxima Centauri | d: Polaris Read more
3432. Practice check: Which option answers this correctly: which instrument measures temperature?
✅ D. Thermometer
a: Voltmeter | b: Barometer | c: Seismometer | d: Thermometer Read more
3433. Practice check: Which option answers this correctly: what is the process of liquid changing into gas called?
✅ C. Evaporation
a: Deposition | b: Freezing | c: Evaporation | d: Condensation Read more
3434. Practice check: Which option answers this correctly: which instrument measures atmospheric pressure?
✅ A. Barometer
a: Barometer | b: Anemometer | c: Hygrometer | d: Thermometer Read more
3435. Practice check: Which option answers this correctly: what is the main gas in Earth’s atmosphere?
✅ B. Nitrogen
a: Argon | b: Nitrogen | c: Oxygen | d: Carbon dioxide Read more
3436. Practice check: Which option answers this correctly: which layer helps protect Earth from much of the Sun’s ultraviolet radiation?
✅ B. Ozone layer
a: Troposphere only | b: Ozone layer | c: Inner core | d: Mantle Read more
3437. Practice check: Which option answers this correctly: which vitamin can the skin produce with adequate sunlight exposure?
✅ D. Vitamin D
a: Vitamin B12 | b: Vitamin K | c: Vitamin C | d: Vitamin D Read more
3438. Practice check: Which option answers this correctly: what is the SI unit of force?
✅ A. Newton
a: Newton | b: Joule | c: Pascal | d: Watt Read more
3439. Practice check: Which option answers this correctly: which organ pumps blood around the human body?
✅ D. Heart
a: Kidney | b: Liver | c: Lung | d: Heart Read more
3440. Practice check: Which option answers this correctly: at standard atmospheric pressure, water boils at what temperature?
✅ B. 100°C
a: 0°C | b: 100°C | c: 150°C | d: 50°C Read more