Chapter 3 sec. 4
What is the scientific method and how does it work?
What are the Hallmarks of science?
What is the difference between a hypothesis and a theory?
Can you have a scientifi
Stars and Galaxies
What is Thermal Radiation?
-nearly all large or dense objects emit thermal radiation, including stars, planets and you
-an objects thermal radiation spectrum depends on only one property: its temperature
-light tells us the
Stars and Galaxies
Chapter 5.1 Notes
What is light?
Light travels as a wave and interacts with matter as a particle
It is an electromagnetic wave
The distance between two adjacent peals of the electric field
-wavelengths get larger as energy g
Stars and Galaxies Chapter 4
What is Speed?
-the rate at which an object moves
-speed = distance/time x (units of m/s)
What is Velocity?
-speed and direction
-example: 10 m/s, due east
What is Acceleration?
-any change in velocity units (m/s squared)
Stars and Galaxies Chapter 3
What are facts?
-data that arise from observation of nature
-facts do not imply absolute certain, but are confirmed with evidence to the extent that we have
a high degree of certainty
What is a Hypothesis?
-an educated guess t
Stars and Galaxies Chapter 2
What is a Constellation?
-a region of the sky
-the constellation names are in Latin
How are stars named?
-the brightest stars have individual names, however these names are not very useful for locating
-stars are names ac
Stars and Galaxies Chapter 1
What is Astronomy?
-The scientific study of the universe beyond the earth.
-Involves: observations, calculations, theoretical interpretation
-Studies: position, dimensions, distribution, motion, composition, and evolution of t
Chapter 1 Study Guide
Some of the things you will be expected to have learned from the introduction and from Ch. 1
Chapter 5 Study Guide
Ch. 5.1 Basic Properties of Light and Matter
where E is the energy of the photon, h is a constant, and is the wavelength of light
the wavelength times the frequency f equals the speed of light c (c=3x108 m/s)
Chapter 4 Study Guide
Ch. 4.1 Describing Motion
What is the difference between speed and velocity?
If you are accelerating, what does it imply about your speed or velocity?
How is mass different f
Chapter 2 Study Guide
Ch. 2.1 Patterns in the Night Sky
North/South Celestial Poles
Stars and Galaxies: Chapter 5
3 Types of Spectra:
1. Continuous: given off by a dense, opaque object because of its temperature. Tells us
about the temperature of the dense object.
2. Emission Line: given off by a thin, low density which has been excited.