Name:________________________ 1
Physics Unit 2 Test
Electromagnetic Radiation
Vocabulary (12 Points)
1. _____________________ is when an object takes in the energy from a wave or
photon (2).
2. When waves bounce off an object it is called _______________________ (2).
3. _____________________ is when the energy of a wave doesn’t change when
moving through an object (2).
4. An alternate model to waves called __________________ are made up of circular
particles (2).
5. On the graph below, label amplitude and wavelength (4).
Multiple Choice (22 Points)
6. The diagram below best describes which process (2)?
a) Sending information from a phone to cell towers.
b) Sending information from cell towers to a phone.
c) Creating heat in a microwave.
d) Using x-ray waves to look at bones.
7. The diagram in question 6 is called a(n) (2):
a) Radiator
b) Magnetron
c) Heat Lamp
d) X-Ray Sensor
Name:________________________ 2
8. A negatively charged particle is called a(n) (2):
a) Proton
b) Neutron
c) Electron
d) Blip Blop
9. The graph below shows which kind of waves (2)?
a) Electromagnetic
b) Light
c) Sound
d) Infrared
10. When waves move through air, they will… (2)
a) gain energy.
b) lose energy.
c) neither gain nor lose energy.
11. One article we read together in class claims this part of the oven is safe to put metal
in (2):
a) The middle.
b) The edges.
12. Microwaves heat up food through (2):
a) Light Waves/Photons
b) Heat Waves
c) Electricity Waves
d) Rotating Certain Molecules
13. Which of the following molecules rotates in a microwave (2)?
a) Water
b) Plastic
c) Metal
d) Electrons
Name:________________________ 3
14. A shock from the electrostatic generator and the lightbulb flickering on in a
microwave are both a result of (2):
a) A high concentration of neutrons.
b) A low concentration of neutrons.
c) A high concentration of electrons.
d) A low concentration of electrons.
15. A wave or photon with high energy will have (2):
a) High amplitude and low frequency.
b) Low amplitude and high frequency.
c) High amplitude and high frequency.
d) Low amplitude and low frequency.
16. Waves can move through empty space (2).
a) True
b) False
Open Ended (16 Points)
17. For a wave, what does having a high amplitude look like? For a photon, what does
having a high amplitude look like? Draw with labels or explain in complete sentences
(4).
18. Convert the following binary number into base 10 (human number): 10110 (4)
19. Draw an x-ray machine and label the following parts: x-ray waves, x-ray sensor,
human limb, and an x-ray wave generator (4).
Name:________________________ 4
20. Describe the process of sending a text from one phone to another. What human
made structures do they have to travel to and how do we make sure the messages
cannot be stolen (4)?
Extra Credit (2 Points): What is the name of the sparks that we created from putting
aluminum in the microwave?