Question

part 1: multiple choice - circle correct answer

1. which light wave has the longest wavelength?

a. infrared
b. ultraviolet
c. gamma
d. radio

1. which best describes refraction?

a. light is taken in and energy is transformed
b. light bends through
c. light bounces off
d. light passes through unchanged

1. in a transverse wave, the crest corresponds to:

a. the direction of particle motion
b. the compressed area
c. the lowest point
d. the highest point

1. most electromagnetic waves are:

a. invisible
b. longitudinal
c. slow
d. impossible to detect

1. the main difference between mechanical and em waves is:

a. speed
b. color
c. need for a medium
d. direction

1. what type of wave does not require a medium to travel?

a. longitudinal waves
b. visible light waves
c. sound waves
d. ocean waves

part 2: matching
match the wave with its application:
matching number wave type application
a. ultraviolet 1. tv remote
b. microwaves 2. sunburns
c. infrared 3. detect high energy events in space
d. gamma 4. detect broken bones
e. x-rays 5. cooking

Explanation:

Part 1: Multiple Choice

Question 1

In the electromagnetic spectrum, radio waves have the longest wavelength among the given options (infrared, ultraviolet, gamma, radio).

Refraction is the bending of light as it passes from one medium to another (e.g., air to water). Option A is absorption, C is reflection, D is transmission without change.

In a transverse wave, the crest is the highest point of the wave, and the trough is the lowest. Particle motion in transverse waves is perpendicular to wave direction (A is incorrect), compressed area is for longitudinal waves (B), and C is trough.

Answer:

D. Radio

Question 2