s4w6 Review formative - - Gwyneth Lenfest | Biblioteka

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match vocabulary to definition

Stavka koja se može prevući		Odgovarajuća stavka
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

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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

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Match the vocab to the definitions

Stavka koja se može prevući		Odgovarajuća stavka
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

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Match the term: rotatation of an object with its orbit.

Stavka koja se može prevući		Odgovarajuća stavka
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

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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

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In visible light, changing the wavelength will change the

intensity

wave speed

color

distance it will travel

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Waves carry _________ from one place to another

materials

energy

medium

frequency

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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

2

Which of the following travels the fastest?

red light

a loud sound

white light

sound in a solid

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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

Stavka koja se može prevući		Odgovarajuća stavka
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

Obavezno

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Match the layer of the sun to an aspect of that layer

Stavka koja se može prevući		Odgovarajuća stavka
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

Obavezno

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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

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What is a binary star system?

A star with two planets

A star explodes

Two stars orbiting each other

A single star

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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

Obavezno

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Stavka koja se može prevući		Odgovarajuća stavka
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

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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.