WorksheetsEarth/Space Weekly Quizizz 2
Total questions: 10
Worksheet time: 5mins
How do scientist determine the elements that are present in a star.
Comparing their spectra to elements on Earth
Determining class based on color and surface temperature
Measuring the distance to the star
Tracking the stars shift in spectra due to the Doppler Effect
Which was the downside to using refracting telescopes?
they are too expensive
the lenses need to be of optical quality
they cannot see space, they have to take in radiation waves
mirrors distorted images
Which is NOT a property of optical telescopes?
Magnifying power
Light Gathering Power
Resolving Power
Light- Distortion Power
Define: A distortion of light due to shorter wavelengths being bent compared to longer wavelengths, producing colored halos.
Red-Shift
Blue-Shift
Chromatic Aberration
Doppler Effect
Why are Space Telescopes more precise than Earth Telescopes?
They are closer to the blue-shift galaxies
Their lenses do not get as dirty easier
They are able to catch all the wavelengths in the EM spectrum
Only a few technicians can work on them
Define: The perceived change in frequency of a wave that is emitted from a source that is moving away or toward an object.
The first law of thermodynamics
Hubble's Law
The Doppler Effect
Emission Spectra
The spectra of most stars is which type of spectra?
Motion based spectra
Continuous Spectra
Emission Spectra
Absorption Spectra
If an object is moving towards us their wavelengths are _____________?
shorter, blue
shorter, red
longer, blue
longer, red
Define: The speed that galaxies are expanding are proportional to their distance from the Milky Way
Red-Shift
Hubble's Law
The Doppler Effect
Blue-Shift
Finish the statement: Greater red color shifts of galaxies indicate
faster speeds
less blue-shifts
slower speeds
an approaching galaxy
