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Creado por StudyBug14
hace más de 9 años
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any object that exists in space
a celestial object that is made up of hot gases
a round celestial object that orbits around one or more stars
when an object does a 360 degree turn on its axis
when an object rotates fully around another object
Three pieces of evidence showing the Earth is round
the first astronomers made observations ___ ago
the process of determining the location of a point by measuring two angles at either end of a fixed baseline
helps in triangulation by measuring the angle above the horizon
patterns of shapes people and animals in the sky
light travels the distance of ____ in a year (light year)
light travels at the speed of ____
brightness of a star seem from Earth
The North Star is also known as ____
the pointer stars are the ___
all stars move slowly ____ throughout the year
The earth's orbit around the Sun is ____
The Earth's axis is tilted at an angle of ____
Higher concentration of sunlight
warmer temperature
Lower concentration of sunlight
Cooler temperature
The moon orbits the Earth in about ___
by the time it finishes to revolve around the earth, the moon spins ___ on its axis
the moon's _____ and ____ are the same
the ____ of the Moon is always facing the Earth
phases if the Moon
Waxing
Waning
Gibbous
Crescent
When one celestial body passes directly in front if another
Lunar Eclipse
Happens __ a year
Solar Eclipse
The solar eclipse also occurs twice a year
Caused by the gravitational force between the Earth and the Moon
the moon pulls at everything on Earth but only water can move.
why do we not see a solar eclipse every time the Moon is between the Sun and Earth?
Far more people have seen a lunar eclipse than a solar eclipse. Why?
The universe is defined as
the universe is ___ old
1 AU is....
Our solar system is comprised of
Planets are held in orbit by ...
The Earth is moving about ___
The first model of the solar system
The Geocentric Model states that __ is at the center and everything in the solar system orbits it
The model that stated that everything in the solar system orbits the Sun
_____ developed the Heliocentric Theory in the ____
A planet has to meet three criteria
an object that's made up of rocky materials, ice, and gas
where does comets come from?
Why do their tails always point away from the Sun, regardless of it they're travelling towards or away from it?
piece of rock that's moving through space
a meteoroid that hits Earth's atmosphere and burns up
a meteoroid that passes through the Earth's atmosphere without getting totally burned
what are shooting stars really?
Challenges of space travel
Two types of space exploration
Telescopes can detect....
Radiation is...
Examples of radiation are...
Optical telescopes can..
The two types of optical telescopes are...
Refracting telescopes uses...
Reflecting telescopes uses...
Non optical telescopes can...
Radio waves are able to...
you can use non optical telescopes on...
Radio waves are ______________ on the receiver
A ___ amount of the radiation from space is absorbed by the Earth's atmosphere
Telescopes are placed in ___ above the _____
Pros about telescopes in space
cons about telescopes
Orbiters are ..
Orbiters can ...
cons about orbiters
Landers are
Landers can..
Landers can only last for
Satellites are...
satellites are ____ because
a GPS stands for
a GPS is programmed in
Remote - sensing satellites can...
Scientists use the remote sensing satellite to
Satellites that are located farther away from the Earth and takes 24 hours to orbit the earth are called ...
Geosynchronous Satellites are used to...
The most important celestial object for life on earth is
The Solar System was formed from ...
The Solar System was also formed from ...
Where did the Sun come from?
What is the Sun composed of?
Nuclear fission is ...
When the Sun grows, ....
The sun's lifespan is
Features of the Sun