Introduction to Star Spectrum

Multiple Choice

High frequency waves have _________ wavelengths.

• varying
• long
• short

Multiple Choice

Which of the following has the shortest wavelength?

• microwaves

• UV rays

• Infrared

• the color blue

Multiple Choice

Which of the following has the most energy?

• Red

• Blue

• Green

• Violet

Multiple Choice

Stars and galaxies release energy. We see this energy as ...

• visible light (colors)

• mechanical sound waves

• heat

• satellites

Multiple Choice

Which element(s) are found in the star's spectra below?

• Hydrogen only

• Hydrogen & Helium

• Calcium only

• Hydrogen & Calcium

Multiple Choice

A sample of gas is analyzed, producing the spectrograph in the image. Identify which element the sample is mostly made-up of?

• Hydrogen

• Helium

• Neon

• Mercury

Multiple Choice

What gases are in the unknown mixture?

• Gas B & Gas D
• Gas C & Gas B
• Gas A & Gas D
• Gas D & Gas C

Multiple Choice

How do astronomers (scientists who study the stars) know so much about the universe?

• From flying all over space in space suits

• Information contained in electromagnetic waves such as light waves

Multiple Choice

Which has the SHORTEST wavelength and, therefore, the highest frequency/most energy

• Radio waves
• Ultraviolet Rays
• Gamma Rays
• X-rays

Multiple Choice

A ___ is used in astronomy to break down light like a prism.

• telescope

• spectroscope

• stethoscope

• microscope

Multiple Choice

Emission spectra emitted by an element (or compound) will produce ___ through a spectroscope.

• bright lines

• a continuous rainbow

• dark lines

• white light

Multiple Choice

If a star is being observed from Earth and it's light has shifted towards the blue side of the electromagnetic spectrum it would be...

• Moving towards the Earth
• Moving away from the Earth
• This is a trick question that cannot be answered
• It isn't a star, it is a very large blueberry.

Multiple Choice

What does the Red-shift tell us about the universe

• the universe is expanding
• the universe is contracting
• the big bang is false
• nothing

Multiple Choice

When blueshift occurs, the perceived WAVELENGTH of the wave would...

• Increase
• Decrease
• Stay the same
• Make frog sounds

Multiple Choice

When redshift occurs, the perceived WAVELENGTH of the wave would...

• Increase
• Decrease
• Stay the same
• Make squirrell sounds

Multiple Choice

The blue section of the wave is measuring _________________.

• wavelength
• crest
• trough
• amplitude 

Multiple Choice

A star is moving away from Earth

• Blue shift

• Red Shift

• Stationary

Multiple Choice

What information does a spectrograph provide?

• The age of a star.

• What elements are in a star.

• When the star was formed.

• The density of stars

Electromagnetic Spectrum Review