What are the three different kinds of mirrors and their characteristics?
Plane: Flat mirrors
Concave: Mirrors that bend towards the light
Convex: Mirrors that bend away from the light
100
What is sound made of and how is it created?
Sound is made of waves of vibrations passing through a medium. Sound is created when objects vibrate and m,ove molecules.
100
What is frequency and what is it measured in?
A measure of how many wavelengths pass by in a given time. It is measured in Hertz (Hz)
100
What is energy?
the ability to do work.
200
How does prism separate white light and what is this process called?
Prisms separate withe light by slowing it down down. This process is called refraction.
200
What are the three categories that objects fall into and what are their characteristics?
Opaque: Objects that don't let light pass through
Transparent: Objects that let light pass through
Translucent: Objects that let dome light pass through
200
What are the different part of a sound wave?
Amplitude- height of the wave
Wavelength- distance between crests of troughs
Crest- highest point of a wave
Trough- lowest point of the wave
200
Whats the speed of sound?
Sound changes speed in different mediums. Sound travels fater in denser medium than in less dense mediums.
200
What are the different kinds of energy?
Mechanical energe
Sound energy
Chemical energy
Electrical energy
Light energy
Heat/Thermal energy
300
How does light travel?
Light can travel through empty space and can pass through some objects.
300
What happens when light passes through a convex lens, and what happens when light goes through a concave lens?
Convex: Light is refracted towards the conversion.
Concave: Light is refracted away from the center line.
300
What is a human's hearing range?
20-20,000 Hz
300
Why does sound travel faster in denser mediums?
Sound travels faster through denser mediums because the molecules are closer together so vibrations pass through more easily.
300
What are ways to generate electricity?
Wind
Hydro-electric
Wave
Tidal
Geothermal
Biomass
400
What are the wavelengths included in the electromagnetic spectrum?
Radio, Microwave, Infrared, Visible, Ultraviolet, X-ray, and Gamma
400
What is the difference between the incident angle and the reflected angle.
The incident angle is the angle of light when it hits the mirror and the reflected angle is the angle when light bounces off the mirror.
400
How do musical instruments create sound?
They create soun
400
What is an Oscilloscope?
A machine used to measure sound waves and visualize them on a screen.
400
What is current and voltage measured in?
Curent is measured in amperes (A)
Voltage is measure in Volts (V)
500
What are the primary colors in the visual spectrum, and if you mix two of them together what colors do you get?
The primary colors are Green, Blue and Red.
Green+Red=Yellow
Red+Blue=Magenta
Blue+Green=Cyan
500
What happens to light when it passes through a glass block prism?
The light wave slows down and bends towards the normal due to entering a more dense medium, then the wave speeds up and bends away from the normal to entering a less dense medium.
500
What are the seven parts of the ear and their jobs?
Aurical/Pinna- Collects sound waves
Ear cannal- Allows waves to travel to the eardrum
Ear Drum- It vibrates and send the signal to the auditory bones
Auditory bones- Amplify the vibrations
Cochlea- Turns the vibrations into electrical signals
Auditory nerve- Takes the signals to the brain.
Semicircular canal- Fluid-filled tubes in your inner ear that help you keep your balance
500
What is an organism's hearing range?
The range of frequencies that is able to detect.
500
What are conductors and Insculators?
Conductors are materials through which electrical currents can move freely.
Insculators are materials that prevent the flow of electricity through them.