Lesson 1
A filter with ______ slits allows only waves that vibrate from side to side to pass through.
horizontal
Electromagnetic waves with the shortest wavelengths and highest frequencies are called _____ ______.
gamma rays
AM radio waves have _____ wavelengths than FM radio waves.
longer
Radio waves carry information from antenna to ________.
antenna
What is the fastest spinning planet in the solar system?
Jupiter
______ different models explain the behavior of electromagnetic waves.
Two
Electromagnetic waves used in ovens and cell phone communications are called _______.
microwaves
AM radio waves travel a _____ distance than FM radio waves.
longer
Cell phones one work if they are in a ______ system.
cellular
What is the most widely grown crop in the United States?
Corn
Light has many properties of a stream of _______.
particles
Electromagnetic waves used in broadcasting are called ____ _______.
radio waves
Radio stations, police radios, and amateur radio operators use ______ radio frequencies.
different
Electromagnetic waves used to examine broken bones inside the body are called ________.
x-rays
What is the only continent without spiders?
Antarctica
An electromagnetic wave is made up of _____ electric and magnetic fields.
vibrating
Electromagnetic waves that make your skin feel warm are called ______ _______.
infrared rays
The process of making cell phone calls happens almost at the speed of _____.
light
Electric and magnetic fields produce each other _______.
repeatedly
Which country accidentally invented the first fireworks by throwing bamboo into fire back in 200 B.C.?
China
An electromagnetic wave involves the transfer of electric and magnetic _____ through matter or space.
radiation / energy
Electromagnetic waves that help your body produce vitamin D are called ______ _______.
ultraviolet rays
The Global _____ System (GPS) is a system of navigation that allows people with GPS receivers to pinpoint their location.
Positioning
Electromagnetic waves are _______ waves.
transverse waves
What famous Boston Red Sox legend left baseball briefly to be a fighter pilot in the second world war?
Ted Williams