Waves Review
The measured distance between two waves.
What is wavelength?
Has a positive charge and a mass of 1 amu.
What is a proton?
EM wave with the highest energy.
What are gamma rays?
This is the term for the patterns of stars in the sky that people have been using for thousands of years to track the stars.
What are constellations?
Measure the angle that a star appears to shift in position from its point in the sky in January to its point in July. Use this angle along with the distance from the Earth to the Sun and some basic geometry to solve for distance.
What is parallax?
Examples are sound and earthquake p-waves
What are longitudinal waves?
Has a negative charge. Found outside the nucleus.
What is an electron?
The wave with the longest wavelength.
What are Radio Waves?
Explain how radio waves can be used to measure how far away things are.
Bounce radio waves off objects and measure the amount of time it takes to bounce back. Since we know the speed of radio waves and we know the time, we can solve for distance.
The phenomenon where the frequency of waves increases as the source moves towards you and the frequency decreases as it moves away from you is known as the:
What is doppler effect?
Examples are ocean waves and earthquake s-waves.
An atom of the same element with different number of neutrons.
What is an isotope?
If a continuous spectrum passes through a cold gas, it will produce this type of spectrum.
The term for using all the known methods for measuring distances to objects in space?
What is the cosmic ladder?
300,000,000m/s
What is the speed of light?
Number of waves passing a given point in a specific time.
An atom with unbalanced electrons to protons that causes it to have a charge.
What is an ion?
This tool allows us to analzye and compare the spectrums emitted by hot gases.
What is a spectroscope?
How can we measure the distances to objects in space that are too far for radar and too far for parallax calculations?
What is absolute and apparent magnitude?
X-ray telescope, took a picture of the black hole
What is the Chandra Telescope?
You are standing on a beach and waves that are 10 inches tall crash at your feet 3 times per second. What is the frequency of the waves?
What is 3Hz?
Find the number of neutrons.
Tungstug (W)
Atomic Number: 74
Atomic Mass: 183
What is 109 neutrons?
Incandescent objects give off this type of spectrum.
What is a continuous spectrum?
An astronomer observes a galaxy far, far away has a spectral pattern that is shifted towards the red portion of the spectrum. What can the astronomer conclude about this galaxy?
The galaxy is moving away from Earth.
This EM Wave is used for most of our wireless communication (WiFi, Cell Phones, TV broadcasts, etc)
What are Radio Waves?