Wave Properties
Electromagnetic Waves
Light and Colors
ENERGY INTRODUCTION
1
These are the kind of waves that need a medium to be transmitted:
a) Electromagnetic
b) Transverse
c) Mechanical
d) Longitudinal
c) Mechanical
1
Electromagnetic waves are:
a) Mechanical b) Non-Mechanical
b) Non-Mechanical
1
Name the phenomenom for which White light breaks down into colors:
a) Reflection b) Diffraction c) Refraction
b) Diffraction
1
These are all measurement units of Energy EXCEPT:
a) KiloWatts kW
b) Calories Cal
c) Celsius °C
d) Joules J
c) Celsius °C
2
From the following choices select those that can change a wave's energy (two choices apply).
a) Wavelenght
b) Crest
c) Amplitude
d) Frequency
a) Wavelenght
d) Frequency
2
Electromagnetic waves don't need a ______ to propagate but _______ can interact with them.
a) medium- energy
b) medium- materials
c) vaccum - materials
b) medium- materials
2
Mention one primary light color that is being absorbed by the following objects.
Blue
2
A rock sliding and rolling down hill is an example of what kind of change?
a) Spontaneous b)Non-Spontaneous
a) Spontaneous
3
Wave A carries a higher frequency than Wave B. True or False?
True
3
Arrange the electromagnetic spectrum radiation from highest to lowest frequency:
Microwaves, Visible, Infrared, UV light, Gamma Rays, X rays, Radio waves
1. Gamma Rays > X rays > UV light > Visible > Infrared> Microwaves > Radio waves
3
Pick from the following list the Color with the Lowest Energy:
a) Blue b) Yellow c) Orange d) Green
c) Orange
3
Transform 4 Cal into Joules
16.7 Joules
4
Calculate the speed of a wave with 2 hz of Frequency and 8 m of wavelenght.
Speed = Wavelength x Frequency.
16 m/s
4
Electromagnetic radiation such as X-rays travel at a high frequency, therefore its Wavelength is: _____
Short
4
The image below comes from a ________ Lens
a) Concave b) Convex c) Flat d) Uneven
b) Convex
4
Transform 34,000 Joules into Calories
1 Cal = 4.184 Joules
8126.2 Cal
5
Calculate the wavelength of a wave with 4 hz of Frequency that travels 24 m/s.
Speed = Wavelength x Frequency.
6 m
5
An electromagnetic wave traveling around 380 nanometers of wavelength is likely to be:
a) Microwave b) Radio Wave c) X Ray d) Uv-Light
d) Uv-Light
5
Complete the path of the light ray from the source
To be drawn at the whiteboard
5
Transform 2.3 kCal into Joules
1 Cal = 4.184 J
9623.2 J