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s4w6 Review formative -

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Last updated 8 months ago
16 questions
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Question 1
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Question 3
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Question 6
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Question 10
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Question 11
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Question 15
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Question 16
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match vocabulary to definition
astronomical unit
a regular oval shape, traced by a point moving in a plane so that the sum of its distances from two other points (the foci) is constant
ellipse
finding the angle between the line of site from one side of an object to another
period
the distance from the center of an ellipse to furthest point
semi-major axis
the average distance from the earth to the sun
angular size
the time interval of a repeating cycle
Which of the following is newtons first law of motion
Energy can neither be created or destroyed
an object in motion stays in motion until acted on by an unbalanced force
Entropy is always increasing
force= mass x acceleration
you can never achieve absolute 0
For every action there is an equal and opposite reaction
Match the vocab to the definitions
retrograde motion
slow rotation of the axis of a planet around another axis
epicycle
how the position of an object changes with respect to its background when seen from different positions
precession
the idea that the earth is the center of the solar system
parallax
how planets seem to move backwards in their orbits
geocentrism
a small circular orbit whose center moves around a larger circular orbit
Match the term: rotatation of an object with its orbit.
Synchronous rotation
Deformation caused by gravitational forces between celestial bodies
Tidal bulge
Temporary dimming of one celestial body by another
Eclipse
Gradual slowing down of rotation due to tidal forces
Tidal braking
Rotates at the same rate as orbit
according to Kepler's second law,

The distances in the orbit of these two sections are the same if the areas are the same.
The distances in the orbit of these two sections are the same if the angles are the same
The time it takes the earth to pass these sections are the same if the areas are the same
the time it takes the earth to pass these sections are the same if the angles are the same
In visible light, changing the wavelength will change the
intensity
wave speed
color
distance it will travel
Waves carry _________ from one place to another
materials
energy
medium
frequency
Using the doppler shift, we should be able to tell if a star is moving
left or right
north or south
up or down
towards us or away from us
Which of the following travels the fastest?
red light
a loud sound
white light
sound in a solid
Now that exhibition is over we are going to start putting aspects of light together. so first - some review: below is a list of things we can glean from light from a star. From what you already know, try to match the aspect of a star we can learn
doppler shift of the spectral analysis
pattern of the light tells us the makeup of the outermost layer of the earth
Brightness of the star
whether the star is moving towards or away from the earth
size of the star
how much light is observed from earth
the mass of a star
light output of the star based on light observed from earth and calculated distance to the star
spectral analysis of the light
parallax, speed of doppler shift,
luminosity of the star
uh... we can't really tell that about an individual star. we have theories about stars in general.
Age of a star
angular diameter, and then calculate the linear measurement with the distance found with parallel. (there are other methods of making more precise measurement as well)
distance of the star
from measuring the speed of the orbits of the stars planets
Match the layer of the sun to an aspect of that layer
Chromosphere
Energy is released by fusion
Core
Energy is moved by photons being released, reabsorbed, and released again
Radiative zone
Energy is carried by moving atoms rather than photons
corona
transition layer where gases move from being transparent to opaque
photosphere
thin layer with strong red-emission lines that can be seen during an eclipse
Convection zone
third hottest layer of the sun that has lowest amount of energy because of its low density
review question: What is a neutrino
Neutrons that have undergone extreme pressure and are shot out from the sun at 75% times the speed of light
A subatomic particle of nearly the same mass as the proton but with no electric charge
Tiny neutral particles with little or no mass and immense penetrating power
A type of Kellogg's cereal that costs $6.99 at HEB
What is a binary star system?
A star with two planets
A star explodes
Two stars orbiting each other
A single star
Quantum tunnelling explains why fusion happens in stars despite the pressure and temperature being less than what is required to overcome the potential barrier between protons. The potential barrier refers to
the strong force between protons keeping the protons apart
The weak force between protons keeping the protons apart
the electromagnetic repulsive force between the protons keeping the protons apart
the gravitational force between protons keeping the protons apart
Pulsar
A rotating disk of gas, dust, and other matter that forms around massive objects in space due to gravity pulling material toward it
Supernova:
The maximum mass (about 1.4 times the mass of our Sun) that a white dwarf star can have before it collapses under its own gravity
Neutron star:
A quantum mechanical force that prevents certain types of stars from collapsing, created by electrons or neutrons being squeezed too close together
Chandrasekhar limit:
An extremely dense stellar remnant composed almost entirely of neutrons, formed when a massive star explodes and its core collapses
Accretion disk:
A powerful explosion that occurs at the end of a massive star's life, briefly outshining entire galaxies and spreading heavy elements into space
Degeneracy pressure
A rapidly rotating neutron star that emits regular pulses of radiation from its magnetic poles, acting like a cosmic lighthouse
I would prefer the session 4 final to be
multiple choice questions like this over the entire year
multiple choice questions and essay questions over just this session harder than the quiz we just took.