Louis Pasteur & Microorganisms
What group of microscopic organisms did Louis Pasteur prove were responsible for food spoilage and spreading diseases?
What are microorganisms
What is the primary natural source of light for planet Earth?
What is the Sun?
What process heats liquids to a specific temperature for a certain time to kill harmful microbes without destroying the taste?
What is pasteurization?
What organ in the human body is used to detect sound waves?
What is the ear?
Which travels faster: light waves or sound waves?
What are light waves?
What old belief suggested that living organisms or diseases could appear out of nowhere without parents?
What is spontaneous generation (or "bad air")?
What portable artificial light source uses a burning wick and wax to produce flame-based light?
What is a candle?
Name two common beverage examples mentioned in the lesson that undergo pasteurization.
What are milk and fruit juice?
Sound is produced by rapid back-and-forth movements of matter known as what?
What are vibrations?
What straight-line paths does light take as it travels from a light source?
What are light rays (or straight lines)?
What two main branches of science did Pasteur combine to study how microorganisms affect substances?
What are Chemistry and Biology?
esides the sun, name another astronomical object in the night sky that serves as a natural light source
What are stars?
Pasteur developed vaccines to help protect humans and animals against which two specific deadly diseases?
What are rabies and anthrax?
What term describes how high or low a sound seems to a listener, which depends on its frequency?
What is pitch?
What happens to light rays when they bounce off a smooth, shiny surface like a mirror?
What is reflection?
What specific process involves microorganisms converting sugars into products like bread, yogurt, cheese, and vinegar?
What is fermentation?
What small insect shown in the lesson produces its own natural light?
What is a firefly (or lightning bug)?
What fundamental medical theory, supported by Pasteur, states that microorganisms cause specific infectious diseases?
What is the Germ Theory of Disease?
Through which state of matter (solid, liquid, or gas) does sound travel the fastest because the particles are closest together?
What is a solid?
What phenomenon occurs when light bends as it passes from one medium to another (such as from air into water)?
What is refraction?
In his famous experiment proving microbes come from existing microbes, what special piece of equipment did Pasteur use that allowed air in while trapping dust and microbes in its curve?
What is a swan-neck flask?
What biological process allows living organisms like fireflies or deep-sea creatures to produce their own natural light through chemical reactions inside their bodies?
What is bioluminescence?
Name three modern medical or hygiene practices that directly resulted from the adoption of Germ Theory.
What are handwashing, sterilization of medical equipment, use of disinfectants, or infection prevention in hospitals?
Sound waves require a medium (matter) to travel through. What happens to sound waves in the complete vacuum of outer space?
What is they cannot travel at all (there is complete silence/no sound)?
Why do we hear a clap of thunder several seconds after seeing the flash of lightning during a storm?
What is because light travels significantly faster than sound through the atmosphere?