**Rainbow formation is due to:**A) Absorption of sunlight by water dropletsB) Diffusion of sunlight through water dropletsC) Ionization of water dropletsD) Refraction and reflection of sunlight by water droplets Show Answer Correct Answer: D – Refraction and reflection of sunlight by water droplets
**The layer of the atmosphere in which the ozone layer lies is:**A) ExosphereB) MesosphereC) TroposphereD) Stratosphere Show Answer Correct Answer: D – Stratosphere
**Which distance is bigger—an astronomical unit (AU) or a light-year (LY)?**A) An astronomical unit (AU)B) Neither one is a measurement of distanceC) They’re both about the same distanceD) A light-year (LY) Show Answer Correct Answer: D – A light-year (LY)
**The rotation in which the Earth rotates is from:**A) West to eastB) East to westC) North to southD) South to north Show Answer Correct Answer: A – West to east
**A collection of water droplets which are suspended in air is called:**A) WindB) CloudC) GasesD) Sleet Show Answer Correct Answer: B – Cloud
**How many calories should you eat per day to lose weight?**A) 2000B) 2500C) 1500D) 3000 Show Answer Correct Answer: C – 1500
**The time interval to complete one rotation of the Earth around its own axis is:**A) 22 hoursB) 23 hoursC) 23 hours 56 minutesD) None of these Show Answer Correct Answer: C – 23 hours 56 minutes
**Enzymes in human bodies are:**A) ProteinsB) VirusesC) BacteriaD) None of these Show Answer Correct Answer: A – Proteins
**Antibiotics are used to fight against:**A) ProteinsB) VirusesC) BacteriaD) None of these Show Answer Correct Answer: C – Bacteria
**An astronomical unit or light year is used for:**A) DistanceB) Time periodC) Light intensityD) Time Show Answer Correct Answer: A – Distance
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