Astronomy: Unit 1 Chapter 2 - 4 Test

Let's play a fun game! Can you guess the correct answer? Don't worry, there's no wrong answer, only learning opportunities! (1 pt each)

• the brave explorers who first found them

• the historical moment they were first discovered

• the fascinating world of Greek-Roman mythology

• their unique and intriguing physical appearance

Imagine you're a scientist observing waves on a beach. What would you call the number of waves that pass by you in one second?

• The length of each wave

• The frequency of the waves

• The time it takes for one wave to pass

• The height of the waves

Imagine you're a surfer, riding the waves. The distance you'd travel from one wave crest to the next is known as the ____ of a wave. Can you guess what it is?

• wavelength

• frequency

• period

• amplitude

Imagine you're a superhero with the power to control light waves! Now, can you tell us how light waves are fundamentally different from water or sound waves?

• They don't need a material medium to travel, they can go through the vacuum of space!

• They have a rainbow of different wavelengths, each one a different color!

• They always travel at the same speed, no matter what they're passing through!

• The energy of all light waves is constant, like a never-ending power source!

Imagine you're a superhero with the power to see different types of electromagnetic radiation. You spot a beam with a wavelength of 700 nm. What type of radiation are you seeing?

• X-rays

• Red light

• Violet light

• Microwaves

Imagine you're a superhero with the power to control electromagnetic waves! Which type of these waves would you manipulate to carry the least energy per photon?

• Gamma rays - the stuff of nuclear explosions

• Visible light - the rainbow you see after a storm

• Ultraviolet rays - the ones responsible for your summer tan

• Radio waves - the ones bringing music to your radio