Magnets
Circuits and Ohm's Law
Waves Basics
Wave interactions
Electromag Spectrum
Random waves Q's
100
Attract or repel?
North Pole and North Pole
Repel
100
What would the formula be for finding V in I=V/R?
V= I x R
100
What part of the wave is number 1 representing?
Wavelength
100
What type of wave interaction is being able to see yourself in the mirror?
Reflection
100
Which type of wave on the electromagnetic spectrum has the longest wavelength?
Radio Waves
100
What is the speed of light?
300,000,000
200
Which point would the magnetic field be the strongest?
Point A
200
Describe a parallel circuit
Has two or more paths for a electric current to flow. If one bulb goes off, the others remain lit.
200
What part of the wave is B representing?
Rarefaction
200
What type of wave interaction is seen in the picture?
Diffraction
200
Which type of wave on the electromagnetic spectrum do we use sunblock to help prevent skin cancer?
Ultraviolet
200
What state of matter does light travel slowest through?
Solid
300
What happens to the poles if you were to cut a magnet?
There would be a North and South pole on each cut piece.
300
A light bulb has a resistance of 4 ohms and a current of 2 A. What is the voltage across the bulb?
8 Volts (v)
300
We use the ________ of a wave to measure how loud a sound is.
Amplitude
300
What type of wave interaction is seen below?
Refraction
300
Which type of wave on the electromagnetic spectrum are the most damaging?
Gamma
300
Explain why we can see lightning before we hear thunder
Sound travels fastest through a solid and slower in a gas. Light travels fastest through a gas and slower in a solid.
400
What are the three ways to increase magnetism for an electromagnet?
1. Increase the size of the metal object
2. Increase the number of coils
3. Stronger power source (battery)
400
Where would alternating current be used?
Electrical outlets/anything that can be plugged in
400
Which wave has the highest frequency? Name the wave color.
Purple
400
What type of wave interaction explains why we have rainbows appear?
Refraction
400
Name the colors in order from longest to shortest wavelength in Visible light
Red, Orange, Yellow, Green, Blue, Violet
400
What three major colors make up white light?
Red, Blue, and Green
500
Based on this picture, what poles are facing each other?
North pole and South pole
500
How many ohms of resistance must be present in a circuit that has 120V and a current of 10A?
12 Ohms
500
What do waves carry?
ENERGY
500
What is this an showing an example of? Hint: think construct or destruct
Destructive interference
500
Sing Mrs. Johnson's song that helps you remember the electromagnetic spectrum!
RMIVUXG
500
What phenomenon is demonstrated by the picture?
The doppler effect