Understand the science behind daily life through questions covering health, energy, environment, inventions and natural phenomena.
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Which gas makes up approximately 21 percent of Earth's atmosphere and is essential for respiration?
Which chemical element has the highest melting point of all pure metals, used in light bulb filaments?
Which chamber of the heart receives deoxygenated blood from the body before sending it to the lungs?
Which property of water causes it to expand when it freezes making ice less dense than liquid water?
Which scientist is credited with developing the first successful smallpox vaccine?
Which astronomical event marks the day with nearly equal hours of day and night worldwide?
Which gland in the human body is often referred to as the master gland because it controls other endocrine glands?
Which planet is the largest in our solar system?
Which part of the human ear converts sound vibrations into electrical signals for the brain?
Which of the following is a non-metal that is a good conductor of electricity?
Which renewable energy source harnesses sunlight directly to generate electricity?
Which of the following gland's malfunction leads to dwarfism or gigantism?
Which everyday phenomenon explains how a guitar produces different musical notes when different strings are plucked?
Which vitamin is essential for proper blood clotting and is often associated with green leafy vegetables?
Which essential mineral is critical for maintaining strong bones and teeth in the human body?
Which everyday device converts alternating current into direct current for charging electronic devices?
Which type of lens is used to correct hyperopia or farsightedness?
Which common ailment is caused by the Helicobacter pylori bacterium?
Which structure connects the throat to the lungs and branches into smaller airways within the chest?
Which household chemical should never be mixed with bleach as it produces toxic chloramine gas?