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big bang theory correct answers the universe was hot and dense at beginning, energy could be transformed into matter in these conditions, if everything is moving away it must have been close at one time, same place same time, explosion of space what are the fundamental forces of nature correct an...

7 protons and 8 neutrons correct answers N-15 (7 protons) is an isotope of nitrogen. Its nucleus consists of: absorb correct answers A Hydrogen atom with its electron in the second energy level can ________ energy so that the electron moves to an energy level farther from the nucleus. rising g...

Why does the Moon show phases in the course of a month? a. the Moon glows from the inside, and its various continents glow different amounts b. the angle the Moon makes with the Sun changes and we see differing amounts of reflected sunlight c. more or less light from the Earth is reflected as the...

White Dwarf "Star" correct answers Result of the death of a low mass star The exposed core of a low mass star; -hot -dense -mostly carbon If there is no new energy production in a white dwarf, what prevents gravity from crushing it? correct answers Electron degeneracy pressure White ...

What are photons? correct answers particles of light Light always behaves like a stream of particles. (T/F) correct answers True The energy of a photon is directly proportional to its wavelength correct answers False How fast does electromagnetic radiation travel? correct answers speed of ...

In which direction does the Earth turn around its axis of rotation? correct answers Earth turns from West to East. In which direction do we perceive the sky turning around us? correct answers Turns around us from East to West. What is the Celestial Sphere? correct answers Imaginary globe where...

Scientific notation is used in astronomy to correct answers Conventionally express numbers with lots of zeros The distance 1000 AU is expressed in scientific notation as correct answers 10^3 The distance of one "Astronomical Unit", or AU, is defined as correct answers The average distance fr...

where are the 48 remaining constellations located? correct answers at the mid and northern celestial latitudes what is the most accurate description of modern constellations? correct answers they are 88 well defined regions on the celestial sphere what is the greek letter of the second brighte...

In which direction does the Earth turn around on its axis of rotation? correct answers West to East In which direction do we preceptive the sky turning around us? correct answers East to West What is the Celestial Sphere? correct answers The celestial sphere is a representation of how the enti...

The Milky Way resides in the Local Group of galaxies. correct answers True The two nearest planets to the Earth are ... correct answers Venus and Mars A solar eclipse can only occur when the Moon is in the ______ phase. correct answers New How old is the Sun? correct answers Near 5 billion ...

What are the Jovian planets in our solar system? correct answers Jupiter, Saturn, Uranus, and Neptune What are the Jovian planets compositions? correct answers Jupiter & Saturn -Made of mostly hydrogen and helium -Very small components of rock and metal Uranus & Neptune -Much smaller than J...

Suppose you know the frequency of a photon and the speed of light. What else can you determine about the photon? correct answers its wavelength and energy Which forms of light are lower in energy and frequency than the light that our eyes can see? correct answers infrared and radio If we say t...

Which of the following changes would cause the fusion rate in the Sun's core to increase? correct answers An increase in the core temperature A decrease in the core radius Which of the following must occur for a star's core to reach equilibrium after an initial change in fusion rate? correct a...

Why do disk stars bob up and down as they orbit the galaxy? correct answers because the gravity of other disk stars always pulls them toward the disk Which part of the galaxy has gas with the hottest average temperature? correct answers the halo What is the typical percentage (by mass) of elem...

giga correct answers 10^9 mega correct answers 10^6 kilo correct answers 10^3 centi correct answers 10^-2 milli correct answers 10^-3 micro correct answers 10^-6 nano correct answers 10^-9 Kepler's First Law correct answers The orbit of a planet is an ellipse with the Sun at on...

Radio waves travel through space at was speed? correct answers at the speed of light, 3 x 10^8 m/s White light passes through a prism and separates into a spectrum of colors. All of these colors are combined into a single beam by means of a lens. What color is the beam? correct answers White V...

What is Kepler's 3rd Law? correct answers Harmonic Law: P^2 = A^3 What is Kepler's 2nd Law? correct answers The Planets cover an equal area of space as they orbit the sun What is Kepler's 1st Law? correct answers The planets orbit the sun in an elliptical orbit What is Newtons 3rd Law? c...

Astronomy correct answers has had important practical applications including the development of Newtonian mechanics, on which much of modern technology is based The intellectual foundation of science is correct answers observation, logic, and skepticism The scientific method is a major force i...

If we traveled away from Earth through the galaxy, the constellations correct answers would appear to change slowly The scientific method can be summarized using the three words correct answers observation theory testing Galileo's observations of the full phase of Venus were inconsistent wi...

frequency correct answers The number of times a given event occurs in a given time; for a wave, the number of cycles that pass the observer in 1 second. Wavelength correct answers Horizontal distance between the crests or between the troughs of two adjacent waves Photon correct answers quantum...

natural motions (aristotle) correct answers motion of objects toward their natural places; fire and air upward and earth and water downward violent motions (aristotle) correct answers motion other than natural motion that must be sustained by a force galileo's observations of motion correct a...

Io experiences tidal heating primarily because __________. correct answers Io's elliptical orbit causes the tidal force on Io to vary as it orbits Jupiter. As you learned in Part A, Io's elliptical orbit is necessary to its tidal heating. This elliptical orbit, in turn, is a result of the orbit...

Astronomical Unit correct answers Earth's average distance from the sun, equal to 1.5 x 10^8 km Solar system correct answers consists of the sun, its family of planets, some smaller bodies, such as, moons and comets planets correct answers small, spherical, non-luminous bodies that orbit a st...