Shared Flashcard Set

Details

Study Guide for Astronomy
Ch 22 - 22 and 1
46
Environmental Studies
9th Grade
01/31/2013

Additional Environmental Studies Flashcards

 


 

Cards

Term
Which scientist proposed three laws of planetary motion?
Definition
Johannes Kepler
Term
The true shape of planetary orbits was discovered by...
Definition
Johannes Kepler
Term
What is the most important safety rule?
Definition
Follow the teacher's instructions
Term
When is the daily tidal range greatest?
Definition
The greatest tidal range occurs during Spring tides due to Earth-sun-moon alignment
Term
The center of mass where two or more celestial bodies orbit each other is known as...
Definition
Barycenter
Term
Which part of the Electromagnetic spectrum is slowest?
Definition
radio waves
Term
The source of the sun's energy is...
Definition
nuclear fusion
Term
Density is measured in which unit?
Definition
g/ml or g/cm^3
Term
Seasons are caused by...
Definition
tilting of earth on its axis
Term
The geocentric model of the universe stated that...
Definition
all known celestial bodies orbited the Earth
Term
What is the shape of the planets' orbit?
Definition
the orbit is elliptical
Term
The shape of Earth is described as...
Definition
an oblate spheroid or ellipsoid, not a true sphere
Term
The movement of the axis of a rotating body or a wobble is known as...
Definition
Revolution (I think nutation)
Term
What tool do you use to measure mass?
Definition
balances, triple beam balances, electronic scales
Term
Which step of the scientific method is information obtained through the senses?
Definition
Step 1: Define problem
Term
Plants use sunlight to produce sugar using chlorophyll thorough a process known as...
Definition
photosynthesis
Term
The energy of a photon is related to its...
Definition
wavelength
Term
The movement in which Earth's axis slowly but continuously points in different directions is known as...
Definition
precession
Term
What are the three types of galaxies?
Definition
Elliptical, Spiral, and Irregular
Term
The turning or spinning of a body on its axis is known as...
Definition
rotaion
Term
Earth's axis continuously points in different direction, a movement known as...
Definition
precession
Term
What are the three types of galaxies?
Definition
Spiral, elliptical, & irregular
Term
The turning or spinning of a body on it's axis is known as...
Definition
rotation
Term
According to the third law of planetary motion, the period of revolution of a planet is related to the planet's...
Definition
orbital period
Term
The gravitational forces of the moon and sun cause what event?
Definition
Tides
Term
Gamma rays, X-rays, visible light, and radio waves are all types of...
Definition
electromagnetic waves
Term
Mass is measured in which unit?
Definition
g, kg, mg
Term
The study of the property of light that depend on the wavelength is known as...
Definition
spectroscopy
Term
The smallest daily tidal range occurs during which type of tide?
Definition
Neap tide
Term
According to the big bang theory, the universe began about...
Definition
13.7 billion years ago
Term
What field located on Earth helps protect us form harmful solar radiation rays?
Definition
ozone layer
Term
Our galaxy is called...
Definition
The Milky Way
Term
Volume is measured in what unit?
Definition
L, mL, cm^3, cc(ml)
Term
Which tidal pattern has two high tides and two low tides each day?
Definition
Semi-Diurnal
Term
What movement of Earth is responsible for night and day?
Definition
Rotation
Term
Which law states that each planet revolves so that an imaginary line connecting it to the sun sweeps over equal areas in equal time intervals?
Definition
Kepler's 2nd Law of Planetary Motion
Term
What is the most important lab safety procedure?
Definition
Follow instructions as directed by the teacher
Term
Which scientist was the first to use the telescope in astronomy?
Definition
Galileo Galilei
Term
Earth is closest to the sun at a point called...
Definition
perihelion
Term
Why does earth experience precession?
Definition
Earth axis maintains at the same angle of tilt. But, the direction in which the axis points continually changes. The change resembles a spinning top or wobble
Term
How does Earth move through space?
Definition
Rotation, revolution, precession
Term
What chemical reactions produce the sun's energy?
Definition
Nuclear fusion
Term
How is solar energy essential to plants?
Definition
Solar energy is changed into chemical energy thorough photosynthesis
Term
How does the sun's energy affect food webs on Earth?
Definition
Plants use sunlight to produce sugar through the actions of chlorophyll
Term
Based o the observed red shifts in the spectral lines of distant galaxies, astronomers conclude that...
Definition
space between galaxies is expanding
Term
Light seen in space is known as...
Definition
a photon
Supporting users have an ad free experience!