Chapter 3 - The Science Of Astronomy Flashcards
What is an apparent movement of an object due to the movement of the observer?
A. Speed
B. Parallax
C. Velocity
Parallax
What is the time it takes for the earth to orbit the sun?
A. Month
B. Day
C. Year
Year
How long it takes for the moon to orbit the Earth is called what?
A. Month
B. Day
C. Year
Month
What is an influence of motion (push, pull, gravity, friction)?
A. Velocity
B. Force
C. Gravity
Force
What is the force of attraction between two objects based on mass and distance?
A. Force
B. Acceleration
C. Gravity
Gravity
What is the time it takes for the earth to revolve around its axis once?
A. Day
B. Month
C. Year
Day
What is the movement of objects across the sky from east to west?
A. Retrograde motion
B. Astronomical unit
C. Heliocentris
Retrograde motion
What is stored energy called?
A. Kinetic
B. Force
C. Potential
Potential
When is the sun at the highest point in the sky?
A. Summer solstice
B. Winter solstice
C. Fall solstice
Summer solstice
What is the term that describes the formation of the universe?
A. Big Bang
B. Heliocentrism
C. Gravity
Big Bang
When is the sun in the highest altitude in the sky?
A. Summer solstice
B. Winter solstice
C. Fall solstice
Summer solstice
What is the idea that the sun is the center of the universe called?
A. Heliocentrism
B. Astronomical unit
C. Summer solstice
Heliocentrism
Who described the shape and speed of planetary orbits?
A. Brahe
B. Einstein
C. Kepler
Kepler
Who made precise measurements about the positions of planets?
A. Brahe
B. Kepler
C. Hubble
Brahe
Who asserted that the universe was governed by physical law?
A. Newton
B. Aristotle
C. Galileo
Aristotle
Who was the first to look into the telescope at the sky?
A. Kepler
B. Copernicus
C. Galileo
Galileo
Who asserted that the universe was expanding and measured the speed that the galaxies are moving apart?
A. Hubble
B. Einstein
C. Newton
Hubble
Who’s second law states that his 2nd law states that force is determined by the mass and acceleration of an object?
A. Kepler
B. Galileo
C. Newton
Newton
Who discovered the moon and Jupiter’s sun spots?
A. Aristotle
B. Hubble
C. Galileo
Galileo
Who’s law states that for every action there is an equal and opposite reaction?
A. Kepler
B. Galileo
C. Newton
Newton
Kepler’s three laws are important for describing what?
A. The shape of planetary orbits
B. Sun centered solar system
C. Gravity
The shape of planetary orbits
What was Galileo the first to use?
A. Microscope
B. The laws of inertia
C. The telescope
The telescope
What is Newtons law of inertia best described as?
A. F=m a
B. A body at rest stays at rest or moves in a straight line at a constant speed unless acted on by a force
C. Action-reaction
A body at rest stays at rest or moves in a straight line at a constant speed unless acted on by a force
Newton’s second law that says the amount of acceleration the force provides depends on the force it produces and the mass of an object is best described as what?
A. Law of inertia
B. Action-reaction
C. F= m a
F= m a
The main factors that affect gravity are the following except what?
A. Mass
B. Speed
C. Distance
Speed
According to Kepler, as planets get closer to the sun in there orbit they what?
A. Slow down
B. Change the shape of the orbit
C. Speed up
Speed up
Galileo saw all but what through the telescope?
A. Craters on the moon
B. The moons of Jupiter
C. The moons of Neptune
The moons of Neptune
The source for energy for the sun is what?
A. Gravity
B. Nuclear fusion
C. Electricity
Nuclear fusion
What is the energy of motion?
Kinetic
What does Einstein’s theory of General Relativity include that is different from his theory of Relativity?
GRAVITY
What is the model of the universe that has the earth in the center of the universe?
Geocentric
What is the energy of motion?
Kinetic
Who developed the SUN CENTERED model of the universe?
Copernicus
Who developed the earth centered model of the universe?
Aristotle
Who was the first to use math to describe the universe and how it worked?
Newton
If the orbit velocity of an object around the earth is too fast - - what will the object do?
Fly off into space
What is the best way to describe the shape of the orbit of the planets?
Ellipse
Finish this sentence:
Acceleration due to gravity is the ————— regardless of their__________
Acceleration due to gravity is the SAME regardless of their MASS.
What are the two most important factors that determine the force of gravity?
Gravity
Mass of the object
