1
CEM 141 CHAPTER 2 AND 3 LEARNING
OBJECTIVES 2025 EXPERT VERIFIED |
ACE THE TEST
Describe the relationship between the frequency, wavelength and velocity of a
wave. - 🧠 ANSWER ✔✔The wavelength is inversely proportional to the
frequency. A longer wavelength, the less frequency there will be. The more
frequency, the decrease in the size of the wavelength.
-speed of light= wavelength (velocity)
VIBGYOR - 🧠 ANSWER ✔✔Ranking of electromagnetic radiation. UV is to the
far left while IR is to the far right.
UV characteristics - 🧠 ANSWER ✔✔Higher frequency
Lower wavelength
High energy
IR Characteristics - 🧠 ANSWER ✔✔Lower frequency
Higher wavelength
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COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
, 2
Low energy
Rank the waves from lowest to highest energy - 🧠 ANSWER ✔✔Radiowaves
microwaves
xrays
gamma rays
Experimental evidence for why electromagnetic radiation is a wave. - 🧠 ANSWER
✔✔When we have waves that go through a barrier with a slit, they make a
diffracted wave. When particles go through the barrier with the slit, the particles do
not diffract. When two waves hit each other at the same time, they will form a new
wave that will have peaks and troughs of the sum of their new wavelengths and
troughs. If peak of one wave aligns with trough of other, they will cancel.
Claim, evidence and reasoning for why electromagnetic radiation is a wave. - 🧠
ANSWER ✔✔Claim: Electromagnetic radiation is a wave.
Evidence: Diffraction and interference.
Reasoning:When we have waves that go through a barrier with a slit, they make a
diffracted wave. When particles go through the barrier with the slit, the particles do
not diffract. When two waves hit each other at the same time, they will form a new
2
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
CEM 141 CHAPTER 2 AND 3 LEARNING
OBJECTIVES 2025 EXPERT VERIFIED |
ACE THE TEST
Describe the relationship between the frequency, wavelength and velocity of a
wave. - 🧠 ANSWER ✔✔The wavelength is inversely proportional to the
frequency. A longer wavelength, the less frequency there will be. The more
frequency, the decrease in the size of the wavelength.
-speed of light= wavelength (velocity)
VIBGYOR - 🧠 ANSWER ✔✔Ranking of electromagnetic radiation. UV is to the
far left while IR is to the far right.
UV characteristics - 🧠 ANSWER ✔✔Higher frequency
Lower wavelength
High energy
IR Characteristics - 🧠 ANSWER ✔✔Lower frequency
Higher wavelength
1
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
, 2
Low energy
Rank the waves from lowest to highest energy - 🧠 ANSWER ✔✔Radiowaves
microwaves
xrays
gamma rays
Experimental evidence for why electromagnetic radiation is a wave. - 🧠 ANSWER
✔✔When we have waves that go through a barrier with a slit, they make a
diffracted wave. When particles go through the barrier with the slit, the particles do
not diffract. When two waves hit each other at the same time, they will form a new
wave that will have peaks and troughs of the sum of their new wavelengths and
troughs. If peak of one wave aligns with trough of other, they will cancel.
Claim, evidence and reasoning for why electromagnetic radiation is a wave. - 🧠
ANSWER ✔✔Claim: Electromagnetic radiation is a wave.
Evidence: Diffraction and interference.
Reasoning:When we have waves that go through a barrier with a slit, they make a
diffracted wave. When particles go through the barrier with the slit, the particles do
not diffract. When two waves hit each other at the same time, they will form a new
2
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
