The diagram to the left shows the electromagnetic spectrum and some of the different types of radiant energy. The component of the spectrum between ultraviolet light and infrared light interacts with the human eye allowing us to see. What is this component of the electromagnetic spectrum called?
The sun emits all the different types of radiant energy on the electromagnetic spectrum. The Earth does not receive the full impact of all this radiation. The ozone layer in the Earth’s atmosphere absorbs and helps to block which type of radiant energy?
Describe compressional and transverse waves. Explain the difference between them. You must include the parts of each type of wave in your explanation along with the definition of the wave.
Both types of waves are produced by something vibrating. Compressional waves move back and forth along the same direction the wave is moving. Transverse waves move by causing matter to move at right angles to the direction the wave is moving.
Sound reaches our ears because sound makes air particles A. heat up. B. cool down. C. slow down. D. vibrate.
Describe the functions of the 3 parts of the ear.
Outer ear – collects sound waves Middle ear – amplifies or boosts the sounds we hear. Inner ear – sends nerve pulses to the brain that we interpret as sound.
A student is investigating how light behaves when it strikes different surfaces. She has a frosted window glass pane, a clear window glass pane, a mirror, and a piece of cardboard. Which of these objects will scatter the most light? Explain your answer.
The frosted window glass, because it is translucent
The bending of a wave when it moves from one material to another is known as ____
Name 4 parts of the eye and describe their functions.
Cornea – protects the eye; it is also where light entering the eye gets refracted first. Lens – further refracts light that enters the eye and focuses images on the retina Retina – The retina is composed of tiny light sensitive nerves that transfer the energy of the light waves to nerve impulses. Optic nerve – the nerve impulses get sent to the brain through the optic nerve which the brain interprets as sight.
Final Jeopardy Name the different types of electromagnetic waves from longest to shortest wavelength. Give an example of the usage of each type of wave.
Final Jeopardy Answer Radio waves – radio & tv, satellites, microwaves Infrared – used to detect or produce heat Visible light – used to see U V rays – helps the body produce vitamin B;used to treat skin conditions X-Rays – used to photograph bones Gamma Rays – used to kill bacteria, radiation therapy