Reading the Light
Scientists separate light into this to study its wavelengths and patterns.
What is a spectrum?
This is the distance between corresponding points on consecutive waves.
What is wavelength?
This effect describes a change in observed wavelength or frequency caused by relative motion between a source and observer.
What is the Doppler Effect?
Most distant galaxies show this type of spectral shift.
What is redshift?
This yellow cartoon character lives in a pineapple under the sea.
Who is SpongeBob SquarePants?
These bright or dark features form recognizable patterns that can act like fingerprints for elements.
What are spectral lines?
Of red and violet visible light, this color has the longer wavelength.
What is red?
A source moving toward an observer produces waves that are compressed in this way.
What are shorter wavelengths?
Most distant galaxies are therefore moving in this direction relative to us.
What is away from us?
In Stranger Things, this creepy alternate dimension exists alongside the normal world.
What is The Upside Down?
If spectral lines from a distant star match the known pattern for hydrogen, scientists can infer this.
What is that hydrogen is present?
As wavelength increases, this property of a wave decreases.
What is frequency?
Spectral lines shifted toward longer wavelengths show this type of shift.
What is redshift?
This term means the speed at which an object is moving away from an observer.
What is recessional velocity?
This singer is behind the hits “Espresso” and “Please Please Please.”
Who is Sabrina Carpenter?
When identifying an element from its spectrum, scientists should compare this rather than simply matching the colors they see.
What are the locations/pattern of the spectral lines?
A wave with its repeating points farther apart has this compared with a wave whose points are closer together.
What is a longer wavelength?
A distant object's spectral lines are redshifted. This tells scientists the object is moving in this direction relative to the observer.
What is away the observer?
Hubble's Law describes this general relationship: the farther away a galaxy is, the _____ it is moving away.
What is faster?
In the Marvel movies, this fictional metal is used to make Captain America's shield.
What is Vibranium?
Scientists can determine what a distant star contains without ever collecting a physical sample because this carries information from the star to Earth.
What is light?
On the visible spectrum, a spectral line shifts from 450 nm to 475 nm. Its wavelength has changed in this way.
What is increased/gotten longer?
Complete our lesson phrase: “The pattern tells us WHAT is there. The _____ tells us HOW IT IS MOVING.”
What is the shift?
Redshift in most distant galaxies plus greater recessional velocities for more distant galaxies provides evidence for this large-scale change in the universe.
What is the expansion of the universe / that the universe is expanding?
In The Hunger Games, Katniss comes from this numbered district.
What is District 12?