What is Thermal Energy?
Energy that makes particles of matter move.
What is Heat?
Flow of thermal energy from one object to another.
What is a Thermometer?
Tool used to measure temperature.
What is the relationship between heat & temperature?
Heat is the flow of energy of moving particles from one material to another . Temperature is a measure of the average amount of energy in the moving particles of a substance.
What is the difference between insulators & conductors & give one example of each.
Insulator- do not transfer heat well. Ex.- fat/fleece
Conductor-transfer heat easily. Ex. metal/light bulb
Name the 3 ways heat can move & give their definitions .
Conduction-two objects touching.
Convection-transfer heat through gasses or liquid.
Radiation-transfer of energy through space.
THREE ways heat can change matter
Change in size, state, or burning it.
What is vibration?
back & forth motion in sound.
What are sound waves?
Area of crowded particles followed by widely spaced particles.
What is energy?
All waves carry this.
What are four things sound travels through?
Air, sound, liquid, gases
Reason dolphins & whales use echoes
navigate or find prey
Name the body parts, in order, that vibrate when sound enters the ear.
outer ear, eardrum, middle ear, inner ear, nerve to brain.
What is an Echo?
Define Hearing Aid
Device used by people who cannot hear
Rate at which sound travels through all states of matter
Slowest in gases & fastest through solids
What is wave length?
Distance from the peak of one wave to the peak of another wave.
What is frequency?
Number of vibrations a sound source makes in a given amount of time.
What is pitch?
Highness and lowness of a sound
What is the relationship between sound & frequency?
High sounds have high frequencies and low sounds have low frequencies.
What is amplitude?
The amount of energy in a sound wave.
What is volume?
Loudness of sound
What is technology that uses sound waves to detect underwater objects and what it stands for?
Name two ways SONAR is used
Measure how deep water is, find schools of fish, map the ocean floor, or search for shipwrecks/hazards.
What are four sources of light?
sun, light, bulbs, fire and fireflies
What is an object that separates white light into bands of colored light?
What is another name for the colors of light we see?
What is the range of waves that make up light?
List the waves in the electromagnetic spectrum from longest wavelengths to shortest wavelength.
radio waves, microwaves, infrared, visible, ultraviolet, x-ray and gamma
What does ROY G. BIV stand for?
What is refraction?
The bending of light as it passes from one material to another.
What do denser materials cause speed of light to do?
What is the tool that reflects light?
What are the two types of lens and tell how light bends?
Concave lens-light bends outward from the center of the lens.
Convex lens- light bends inward toward center.
What is the thin clear tissue covering each eye?
What is the opening in the eye?
What is the colored part of the eye?
What is the tissue covering the back of the eye?
What transfers signals from eye to brain?
What is reflection?
Waves hitting a surface and bouncing off of them.