🌈 LIGHTS, CAMERA, REFRACTION!
You look into a mirror and see yourself staring back. This behavior of light makes your reflection possible.
reflection
Turn up the volume! Increasing this property of a sound wave makes the sound louder.
amplitude
This scientist's experiments helped establish that microorganisms are responsible for many diseases.
Louis Pasteur
In a household or personal-care product, I am the ingredient responsible for performing the product's main intended function.
active ingredient
An object moves from one location to another without rotating. This type of motion is taking place.
Translational Motion
A spoon placed in a glass of water appears bent even though nobody broke it. This phenomenon is responsible.
refraction
Astronauts can't simply shout to one another through empty space because sound requires this.
medium
Milk doesn't have to go to battle, but it can undergo this process that uses controlled heating to reduce harmful microorganisms.
Pasteurization
This toothpaste ingredient mentioned in your lesson helps prevent tooth decay.
sodium fluoride
Hydraulic systems work effectively partly because liquids have this property: they are virtually ________.
incompressible
I use the bending of light to help a person see objects more clearly.
eyeglasses
I am the communication device that takes sound waves from your voice and turns them into electrical signals.
microphone
I prepare the immune system to recognize and fight a specific disease before the real threat arrives.
Vaccine
Two toothpastes contain the same active ingredient but taste and feel completely different. These ingredients most likely account for their different flavor and texture.
inactive ingredients
According to this principle, pressure applied to a confined fluid is transmitted equally in all directions.
Pascal Principle
A beam of light enters glass from air and bends. What change in the light causes this bending?
Its speed changes
A ship sends a sound pulse toward the ocean floor and detects its echo 2 seconds later. The technology using this reflected sound to locate underwater objects is called this.
SONAR
A classroom table is cleaned using a chemical designed to kill or control harmful microorganisms on its surface. Name this type of substance.
Disinfectant
Ionic compounds are formed when electrons do this between atoms rather than being shared.
Transfer
A basketball rolls across the gym floor without slipping. It demonstrates these TWO types of motion simultaneously.
rotational and translational motion
A student says light and sound both need matter to travel. Correct the student's claim
Sound requires a medium, while light is electromagnetic and can travel through a vacuum.
A recording studio has too many echoes. Engineers cover parts of the walls with acoustic foam. Explain what the foam does to the sound waves.
It absorbs sound waves and reduces unwanted reflections/echoes.
Before Germ Theory became accepted, some people believed diseases could simply appear spontaneously or come from “bad air.” Pasteur's work provided evidence for this alternative explanation.
microorganisms can cause infectious diseases
A shampoo works perfectly as a cleanser, but customers complain that it smells unpleasant and has a poor texture. Should the manufacturer primarily change the active or inactive ingredients? Explain.
Inactive ingredients, because they can modify properties such as fragrance and texture without changing the product's main intended function.
A hydraulic lift normally needs five pumps to raise a car to a certain height. One day it requires ten pumps, although there are no visible external leaks. What likely entered the system and reduced efficient pressure transmission?