EMS
EMS Uses
Light Behaviors
Mirrors
Lenses
Random Trivia
100
True or false: Electromagnetic waves can travel WITHOUT a medium. (Bonus: 100 pts - what type of waves are in the electromagnetic spectrum?)
True; Bonus: Transverse waves
100
What type of electromagnetic wave is commonly used to heat food?
Microwaves
100
What happens to light when it bounces off a surface like a mirror?
Reflection
100
What type of mirror is flat and reflects an image with the same size and shape as the object?
A plane mirror
100
Pick the correct term to complete the sentence below:
Lenses ( reflect / refract / absorb ) light and Mirrors ( reflect / refract / absorb ) light.
refract, reflect
100
How many bones does a shark have in it's body?
0
200
True or false: Gamma rays are FASTER than radio waves.
False; all types of waves on the electromagnetic spectrum are the same speed (speed of light).
200
Which type of electromagnetic wave is associated with heat? Used in thermal scopes and heat maps.
Infrared waves
200
What occurs when light passes through a transparent material and bends?
Refraction
200
Identify each image below as either type of Mirror or Lenses.
1. Concave mirror
2. Convex Mirror
200
Identify each image below as either of the Mirrors or Lenses.
1. Convex Lens
2. Concave Lens
200
How many letters in the longest English word?
45
Pneumonoultramicroscopicsilicovolcanoconiosis
300
What is the smallest part of the electromagnetic spectrum?
Visible light
300
List two uses for x-rays, a part of the electromagnetic spectrum.
1. Used by doctors to look at bones
2. Used in airport security to see through luggage
300
What usually happens to light when it is absorbed by a material?
The material converts the light energy into heat or thermal energy.
300
Complete the following sentence:
Concave mirrors ___________ light whereas convex mirrors ____________ light.
(Hint: Does the light come together or spread apart?)
converge; diverge
300
Complete the following sentence:
Concave lenses ___________ light whereas convex lenses ____________ light.
(Hint: Does the light come together or spread apart?)
diverge; converge
300
What is the speed of light in a vacuum in kilometers per second?
299,792 km/s
186,000 mi/s
400
Complete the sentence below:
On the electromagnetic spectrum, _________ waves have the lowest amount of energy whereas _________ rays have the highest amount of energy.
radio; gamma
400
List two examples of where you would find ultraviolet waves, a part of the electromagnetic spectrum.
1. Tanning beds
2. Sterilization of objects
3. UV rays from the sun
400
Using the image below, complete the following sentence:
Visible light is best absorbed by _____________ objects and best reflected by ____________ objects.
black; white
400
What image is created with a Concave Mirror..
1. At a distance?
2. Up close?
1. Magnified and Upright, like a makeup mirror or telescope
2. Inverted and Reduced
400
What image is created with a Concave lens....
1. From a Distance?
2. Up Close?
1. Upright and Reduced
2. Upright and Reduced
400
How many years ago did the construction of the Great Wall of China begin?
~2,300 years ago
500
What is the relationship between wavelength and frequency in the electromagnetic spectrum?
Inverse relationship; as frequency increases, wavelength decreases and vice versa.
500
What type of electromagnetic wave is used to target and kill cancer cells? Explain why this type is used. (Hint: think of the wavelength/frequency/energy)
Gamma rays; gamma rays are used to target and kill cancer cells because they have the highest amount of energy on the electromagnetic spectrum. This high energy allows gamma rays to penetrate deeply through the body.
500
The following image shows the angle of refraction in water vs in oil.
What best explains the difference in the angle of refraction?
(Hint/Sentence starter: There is a difference in the angle of refraction because light travels...)
There is a difference in the angle of refraction because light travels at different speeds through different substances.
500
What image is created with a convex mirror, such as a car mirror or a security mirror?
The image is upright and reduced; you can see more of your surroundings.
500
What image is created with a convex lens....
1. From a Distance?
2. Up Close?
1. Inverted and Reduced
2. Magnified and Upright
500
What is the height in meters of Mount Kilimanjaro, the highest mountain in Africa?
5,895 meters