2º ESO
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WAVES
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ELECTROMAGNETIC SPECTRUM
WAVES
59
prueba
CHARACTERISTICS
12
De frecuencia a long. onda (luz)
De frecuencia a long. onda (luz)
De frecuencia a long. onda (sonido)
De frecuencia a long. onda (sonido)
De frecuencia a periodo
De periodo a frecuencia
De periodo a longitud de onda (luz)
De periodo a longitud de onda (luz)
De periodo a longitud de onda (luz)
De periodo a longitud de onda (sonido)
De periodo a longitud de onda (sonido)
Onda longitudinal
ELECTROMAGNETIC SPECTRUM
8
Electromagnetic waves that you can see are called
How much of the electromagnetic spectrum is visible?
Los colores
Ordena la siguiente lista de mayor a menor longitud de onda( marca como 1 la mayor)
Ordena la siguiente lista de mayor a menor longitud de onda( marca como 1 la mayor)
The waves that have shorter waveslengths than visible light are: (check all that apply)
What type of waves are used to transmit cellular telephone messages?
Which electromagnetic waves have the shortest wavelengths and highest frequencies?
HEARING
8
A rock concert produces at least 110 decibels of noise. How long do you need to be exposed to this level of noise to begin to get hearing damage?
Elephants can hear sounds between one and 20,000 hertz. This means they can hear:
Long or repeated exposure to noise over 85 decibels can cause hearing loss. Which of the following everyday sounds does not exceed this level?
Some animals bounce sound waves off an object to detect their location, this is known as echolocation. Which of the following animals does not use echolocation?
When sound waves reach the ear drum, what happens next?
When your mother tells you to turn down the radio she is asking you to:
Which part of the auditory system is the most sensitive to damage from sudden loud sounds?
Why do people using large noisy drills often wear ear muffs?
LIGHT
10
A beam of light hitting a mirror at an angle is reflected off at ...
A beam of light that is parallel to the principal axis is incident on a concave mirror. What happens to the reflected beam of light?
How do we see a tree?
Light will almost always travel from one place to another along a path of least
The law of reflection holds for
The mirror on the passenger side of most newer cars is a
To make a wall reflect as much light as possible, you should paint it ...
When light bounces back off a surface, we say it has been ...
Which one of the following is not the characteristics of the image formed by a plane mirror?
Why do scissors look shiny?
MIRRORS AND LENSES
10
A concave lens bends light toward its _______.
Convex lenses can form different kinds of images. What influences the type of image that forms?
Describe the image formed by a concave lens.
Farsighted people must wear ______.
In a concave mirror, light rays parallel to the optical axis reflect back through a single point. What is that point called?
In a plane mirror, how does the reflected image appear?
In normal vision, on what part of the eye do images form?
Lenses form images by _______
What is a real image?
Which is an example of a convex lens?
SOUND
10
A sound wave's amplitude determines:
An astronaut picks up a stone from the moon and throws it hard against another stone. He doesn't hear any sound. Why not?
Eco
If a sound is high-pitched and soft, the sound wave is:
If a sound is low pitched and loud, the sound wave is:
If a sound is low pitched and quiet, the sound wave is:
Reverberación
Sonido del Sol
Sound cannot travel through _____________
Timbre