Finding Exoplanets
At what temperature range can liquid water exist?
Between 0o and 100o C
_____ is a form of radiant energy that travels in "rays."
Light
This model represents a star with objects transiting at different intervals.
Orrery
When scientists study what stars are made of, what tool might they use?
Spectroscope
By measuring the time between each transit you can tell...
an exoplanet's orbital period
Which color light has a shorter wavelength, red or blue?
When one object appears to move across another object as seen from the perspective of an observer.
Transit
Stars like Earth’s Sun most likely formed directly from a ____.
Nebula
If a transit graph shows a larger dip in dimness from a star, that means...
the exoplanet is large
True or false: a wave with short wavelength will have low energy.
FALSE. A wave with long wavelength will have low energy, and a wave with a short wavelength will have high energy.
the time it takes one object to orbit another
orbital period
Things like a star's luminosity, temperature, color depend on the star's initial ________.
Acceptable answers: mass and/or size
Which moon of Jupiter has the largest orbital radius?
Callisto
Every light source has a unique signature spectrum that depends on _____.
Acceptable answers: elements in the light source, gases in the atmosphere, different wavelengths.
the distance at which one object orbits another
orbital radius
How many stars are there in the Milky Way galaxy? (closest to the actual number gets the points!)
Between 100 billion and 400 billion stars
How many exoplanets has NASA found? (closest to the actual number gets the points)
5,806 exoplanets
What kind of electromagnetic rays are invisible to scientists but still useful when studying the universe?
Acceptable answers: UV rays, X-rays, gamma rays, infrared, microwave, radio waves.
a bright line of a spectrum, indicating the wavelength of emitted light
emission line
Scientists study this type of wavelength when looking at supernova.
Gamma rays