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Astronomy Study Guide
Ch 22-25 and 1
43
Environmental Studies
9th Grade
01/31/2013

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Cards

Term
Using Tycho Brahe's data,which scientist proposed three laws of planetary motion ?
Definition
Kepler
Term
The true shape of planetary orbits was discovered by..
Definition
Kepler
Term
What is the most important safety rule ?
Definition
Follow teachers instructions
Term
When is the daily tidal range greatest ?
Definition
Spring Tides
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 the 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
The tilting of the Earth on its axis rotates 23.5 degrees
Term
The geocentric model of the universe stated that ?
Definition
The earth-centered
Term
What is the shape of a planet's orbit ?
Definition
Ellipses
Term
According to the article the shape of the earth is described as..
Definition
Obslate spheriod or ellipsoid
Term
The movement of the axis of a rotating body or wobble is known as ?
Definition
Revolution
Term
What tool do you use to measure mass ?
Definition
Blances,triple beam balance,and electronic scale
Term
In which step of the scientific method is information obtained through the senses ?
Definition
1.Define Problem
Term
Plants use sunlight to produce sugar through the actions of the chlorophyll through the process known as?
Definition
Photosynthesis
Term
The energy of a photon is related to its..
Definition
wave length
Term
Earth axis slowly but continuously points in different directions 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 its axis in known as..
Definition
rotation
Term
Based on the observed red shifts in the spectral lines of distant galaxies,astronomers conclude that ?
Definition
The universe is expanding
Term
According to the third law of planetary motion,the period of revolution of a planet is related to the planet's ?
Definition
equal orbital period
Term
The gravitational forces of the moon and the sun causes this event ?
Definition
Tides
Term
Gamma rays,x-rays,visible,and radio waves are all types of ?
Definition
Electromagnetic radiation
Term
Mass is measured in which unit ?
Definition
grams,kilograms,milligrams
Term
The study of the properties 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 us from harmful solar radiation rays ?
Definition
ozone layer
Term
Our galaxy is called the ?
Definition
Milky way
Term
Light seen in space is known as a ?
Definition
Photon
Term
Volume is measured in what unit?
Definition
L,m,cm^3,cc(mL)
Term
Which tidal pattern has two high tides and two low tides each day ?
Definition
semidiurnal
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 equal time intervals ?
Definition
Newton 2nd law
Term
What is the most important lab safety procedure ?
Definition
Follow teachers instructions
Term
Which scientist was the first to use the telescope in astronomy ?
Definition
Galileo
Term
Earth is closest to the sun at a point called ?
Definition
Perihelion
Term
Why does Earth experience precession ?
Definition
direction in which the axis points changes
Term
How does earth move through space ?
Definition
revoluton,rotation,precession
Term
what chemical reactions produce the suns energy ?
Definition
nuclear fusion
Term
How is solar energy essential to plants ?
Definition
solar energy converted into chemical energy through the process of photosythesis
Term
How does the suns energy affect food webs on Earth ?
Definition
Plants use sunlight to produce
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