Study gide for Astronomy

Which scientist proposed three laws of planetary motion?
Kepler
Who discover the true shape of the planetary orbit?
Kepler
What’s the most important safety rule?
Listen to your teacher
When is the daily tidal range greatest?
Spring tide
The center of mass where two or more celestial bodies orbit each other is know as
Barycenter
Which part of the Electromagnetic spectrum is the slowest?
Radio waves
What is the source of the sun’s energy know as
Nuclear fusion
Density is measured in which unit?
g/ml or g/cm^3
Season are caused by
The tilting of the earth on its axis, 23.5 degrees
The geocentric model of the universe stated that
In the geocentric model, the moon,sun,and the know planets- Mercury,Venus,Mars,and Jupiter
What is the shape of a planet’s orbit?
Ellipses
According to the article, the shape of the Earth is describe as
As an oblate spheroid or ellipsoid, instead of a true sphere
The movement of the axis of a rotating body or a wobble is know as
Revolution
What tool do you use to measure mass?
Balance,triple-beam balance,electronic balance.
In which step of the scientific method is information obtained through the senses?
Define problem
Plants use sunlight to produce sugar through the actions of the chlorophyll through a process know as
Photosynthesis
The energy of a photon is related to its
Wave length
Earth’s axis slowly but continuously points in different directions, a movement as
Precession
What are the three types of galaxies?
Spiral,Elliptical,Irregular
The turning or spinning of a body on its axis is know as
Rotation
The period of revolution of a planet is related to the planet’s…
Planet’s orbital period
The gravitational force of the moon and the sun caused by…
Tides
Gamma rays,X-rays,visible light,and radio waves are all types of…
Electromagnetic Radiation
Mass is measured in which unit?
g, kg, mg
The study of the properties of light that depend on the wavelength is know as…
Spectroscopy
The smallest daily tidal range occurs during which type of tide?
Neap tides
According to the big bang theory, the universe began about how many years ago?
13.7 billions years ago
What field located on earth helps protect us from harmful solar radiation rays?
Ozone layers
Our galaxy is called…
Milky Way Galaxy
Volume is measured in what unit?
L,mL,cm^3,cc(ml)
Which tidal pattern has two high tides and two low tides each day?
Semi-diurnal
What movement of Earth is responsible for night and day?
Perihelion
Why does Earth move through space?
Nuclear fusion
Why does Earth experience precession?
Earth’s axis maintains approximately the same angle is tilt. But,the direction in which the axis points continually changes.
How does Earth move through space?
Rotation,Revolution,Precession
Light seen in space is know as a…
Photon
What chemical reactions produce the sun’s energy?
Nuclear fusion
How is solar energy essential to plants?
Solar energy is changed into chemical energy through photosynthesis
How does the sun’s affect food webs on earth?
Plants use sunlight to produce sugar through the actions of the chlorophyll.