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astro 1000


Froggy Jumps astro 1000Versión en línea class por Margaret Hankins 1 Amount of time it takes moon to complete orbit around Earth a Month b Day c Year 2 How do we use location of sun to determine date of summer solstice? a Sun reaches highest point in sky for the year b Sun reaches lowest point of sky for the year c Sun reaches westernmost point in sky for the year 3 Why are there 7 days in a week? a Measurements of speed of light b Number of days in a year is divisible by 7 c There were 7 classical planets and the number of days in a month is divisible by 7 4 Copernicus proposed which of the following a Heliocentrism (sun centered) b Geocentrism (earth centered) c Protestanism 5 Which of the following are dwarf planets? a Mars, Mercury b Ceres, Pluto, Eris c Halley's Comet 6 Who discovered universal law of gravitation? a Issac Newton b Einstein c Domingue 7 What is not true about Tycho Brahe? a He took precise measurements about position of planets in the sky b He was a student of Galileo c Kepler was his student 8 Which is an earth centered theory a Heliocentric b Geocentric c Big Bang 9 Is it possible to make an ice cube 10,000km on each side? a No, self gravity would collapse the cube into sphere b No, not enough ice in universe c Yes, ice is strong enough 10 Monty hall problem, contestants benefit by changing doors a True b False c 11 Which scales is human intuition best? a 1-5 microns b 1cm up to 100m c 10bil light years 12 Which is NOT an assumption to preform science? a Only things which can be measured are real b Universe is real and independent c We can make observations about information in universe 13 What is the highest authority in science? a Reality, data b Textbooks c National science foundation 14 Scientific law is superior to a theory a True b False c 15 Einsteins theory is better, but we use Newtons because its easy a True b False c 16 Which would we use to plan a trip to mars? a Ptolemaic geocenttrism b Copernican heliocentrism c Big bang cosmology 17 Which method do we use to measure distance to moon? a Standard candle b LASER reflection c Keplers second law 18 Which magnitude is the brightest? a m= +5 b m= 0 c m= -2 19 Which measures distance to nearest star systems? a Rutherford scattering b LASER reflection c Parallax 20 Age of the earth believed prior to european enlightenment? a A few thousand years b 20 days c Infinite 21 Benoit de Maillet used which to measure age of earth? a Decline of sea level b Lunar orbits c Radioactive decay 22 How old is earth and solar system? a 40 mil years b 4.55 +/- 0.05 Ga c 100,000 years 23 Which is NOT a reason to use potassium-argon dating? a Method is inexpensive b Potassium is common c Method allows measure of original amount of daughter product 24 What is NOT true about isochron dating? a Method is inexpensive b Works through use of ratios c Allows measurement of daughter product 25 What 3 particles make up ordinary matter? a Neutrinos, charm and bottom b Electron, up and down c Up, down and top 26 An electron is a what? a Lepton b Meson c Boson 27 Which is a baryon? a Proton b Photon c Electron 28 Which force has infinite range? a Strong and weak forces b Electromagnetic and gravitational forces c Elastic force 29 What is NOT true about the higgs boson? a It has 0 spin b It has no charge c It has 0 mass 30 Longer wavelength light has lower frequency than shorter wavelength light a True b False c 31 When we view gamma rays, what events are we looking at? a Old red stars b Cold quiet events c Violent or hot events 32 Which have we gotten most info about universe from? a Visible light b Microwaves c Ultraviolet light 33 Which has the longest wavelengths? a Radio waves b Infrarred light c Xrays 34 What is the effect of including a cosmological constant in einsteins equation? a It causes doppler shift b Provides negative gravity or repulsive force to counter gravity c It has no effect 35 Which is true in the steady state model? a Uni is infinite in age and expanding b Uni is static c Uni is finite 36 Which is NOT true about primordial atom model? a Universe is finite b All matter mustve started at some point c Uni is infinite in age 37 Which occured first? a Baruogenesis b Creation of cosmic microwave background c Formation of earth 38 Which lead to replacement of steady state to big bang model? a Cosmic microwave background b Neutrinos c Hubble law 39 How long after time T = 0 did cosmic microwave background occur? a 1 second b 1 minute c Few hundred thousand years 40 Location of big bang a All points in space b East c Direction of leo constellation 41 In euclidian space, angles of triangle add up to a 180 degrees b Less than 180 degrees c 57 degrees 42 Which problem of big bang is NOT solved by inflation? a Horizon problem b Time problem c Flatness problem 43 What proportion of contents in uni is visible? a 0.04% b 75% c 200% 44 What proportion of uni is made of matter? a 75% b 25% c 100% 45 What is NOT info determined from cosmic microwave background? a Shape of space b Temp of uni c Distance between milky way and andromeda 46 What component of uni is largest? a Normal energy b Dark/vacuum energy c Visible matter 47 Supernova type 1a involves explosion of what? a White dwarf b Massive star c Neutron star 48 Which was the discovery that led to death of dark energy? a Distant supernovae were too dim b Grey dust clogs uni c Distant supernovae too bright 49 What is speed of light in a vacuum? a 0mph b 70mph c 186,000miles/second, 1 ft/nanosecond 50 If someone traveling at half speed light shines a light at you, how fast would that signal appear to you? a Half speed of light b 70mph c Full speed of light 51 In your own frame, how fast are you travelling? a 0, at rest b 186,000 miles/second c 70mph 52 To reach escape velocity, total energy needs to be what? a Negative b Zero c Infinite 53 Which describes general relativity? a Geometric theory b Describes electromagnetism c Action at distance theory 54 Which following particles travels faster than speed of light with imaginary rest mass? a Fermions b Protons c Tachyons 55 What is a result of falling to schwarzchild black hole? a One would hit singularity b One would go back in time c One would go through wormhole 56 What is an event horizon? a Solid shield surrounding a singularity b Location in space through which travel in only one direction is possible c Imaginary realm 57 Which of the following would NOT occur if one falls into shwarzchild black hole? a One would be pulled apart by tidal forces b One would fall into a new dimension c One would experience highly curved space 58 When we look at a black hole we are actually seeing a Electromagnetic radiation from its accretion disc b Event horizon c Singularity 59 We can easily see hawking radiation a True b False c 60 Source of hawking radiation is a One half of virtual pair of particles escaping, other falls through event horizon b Black holes accretion disc c Singularity 61 Which of the following describes gravitational wave? a Waves of distortions in space and time b Large pulse of neutrons c Electromagnetic waves 62 What type of collision hasnt been seen by grav. wave observatories? a Collision of two neutron stars b Collision of two white dwarfs c Collision of two black holes 63 Which isnt a star? a Brown dwarf b White dwarf c Sun 64 Positions of stars in sky are used for following? a Understanding forces b Understanding log c Celestial navigation 65 Proper motion of a star across sky is a Changes in stars position relative to other stars due to stars transverse motion relative to earth b Changes in position due to motion of earth around sun c Motion of stars around polaris due to earth rotation 66 Main fuel burned by sun a Hydrogen b Helium c Coal 67 Which of the following is second reaction in direct p-p burning a p + p -> d + e + ve b d + p -> 3He + y c 12C + p -> 13N + y 68 What type of star is sun a Main sequence b Yellow giant c White dwarf 69 Which is present when star is formed for CNO cycles to occur? a 20Ne b 12C c 209Bi 70 Which element is produced through CNO cycle? a Nitrogen b Carbon c Lithium 71 Primary source of high energy solar neutrinos being detected a p-p chain I b p-p chain III c hep reaction 72 How many alpha particles come together for 12C nucleus? a 6 b 12 c 3 73 When does helium burning occur? a Before star burns Hydrogen b After star runs out of Hydrogen c After star explodes 74 Which is produced in helium burning? a Carbon, oxygen b Neon c Sodium 75 Which is produced in carbon burning? a Neon, sodium b Carbon c Iridium 76 Which is produced in neon burning? a Lead b Magnesium c Coal 77 What will sun be after helium burning? a Neutron star b Black hole c Carbon oxygen white dwarf 78 After european enlightenment, age of earth was thought to be a Infinite b 7 days c 1 year

astro 1000

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astro 1000Versión en línea

por Margaret Hankins

Amount of time it takes moon to complete orbit around Earth

How do we use location of sun to determine date of summer solstice?

Why are there 7 days in a week?

Copernicus proposed which of the following

Which of the following are dwarf planets?

Who discovered universal law of gravitation?

What is not true about Tycho Brahe?

Which is an earth centered theory

Is it possible to make an ice cube 10,000km on each side?

Monty hall problem, contestants benefit by changing doors

Which scales is human intuition best?

Which is NOT an assumption to preform science?

What is the highest authority in science?

Scientific law is superior to a theory

Einsteins theory is better, but we use Newtons because its easy

Which would we use to plan a trip to mars?

Which method do we use to measure distance to moon?

Which magnitude is the brightest?

Which measures distance to nearest star systems?

Age of the earth believed prior to european enlightenment?

Benoit de Maillet used which to measure age of earth?

How old is earth and solar system?

Which is NOT a reason to use potassium-argon dating?

What is NOT true about isochron dating?

What 3 particles make up ordinary matter?

An electron is a what?

Which is a baryon?

Which force has infinite range?

What is NOT true about the higgs boson?

Longer wavelength light has lower frequency than shorter wavelength light

When we view gamma rays, what events are we looking at?

Which have we gotten most info about universe from?

Which has the longest wavelengths?

What is the effect of including a cosmological constant in einsteins equation?

Which is true in the steady state model?

Which is NOT true about primordial atom model?

Which occured first?

Which lead to replacement of steady state to big bang model?

How long after time T = 0 did cosmic microwave background occur?

Location of big bang

In euclidian space, angles of triangle add up to

Which problem of big bang is NOT solved by inflation?

What proportion of contents in uni is visible?

What proportion of uni is made of matter?

What is NOT info determined from cosmic microwave background?

What component of uni is largest?

Supernova type 1a involves explosion of what?

Which was the discovery that led to death of dark energy?

What is speed of light in a vacuum?

If someone traveling at half speed light shines a light at you, how fast would that signal appear to you?

In your own frame, how fast are you travelling?

To reach escape velocity, total energy needs to be what?

Which describes general relativity?

Which following particles travels faster than speed of light with imaginary rest mass?

What is a result of falling to schwarzchild black hole?

What is an event horizon?

Which of the following would NOT occur if one falls into shwarzchild black hole?

When we look at a black hole we are actually seeing

We can easily see hawking radiation

Source of hawking radiation is

Which of the following describes gravitational wave?