Astrology and space Flashcards
What are planents
a.) an object that orbits the sun
b.) Eight planets in our solar system
what is the Moon
a.) The natural satellite from the Earth.
b.) Visible by reflection from the sun.
What are stars
a.) Giant balls of hot gas
b.) The sun is our star
what is a chunk of of Rock or dust in space?
Meteriod
what is a shooting star- streak of light produced?
meteor
what is a Meteorite?
a meteoroid that enters Earth’s atmosphere and hits its surface
What is a comet?
a loose collection of ice and dust that orbits the sun
What is a large rockey object that revolves around the sun?
Asteroid
What is a group of stars that are in a pattern?
Consellations
What are some elements of the Earths Rotation?
a.) Earth rotates on its axis, at 23.5 degrees
b.) One rotation takes 24 hours, causing day and night
What are some elements of Earths revolutions?
a.) Revolves around the Sun once every 364.25 days
b.) Earth’s path as it revolves around the Sun is its orbit
c.) Earth’s orbit is elliptical (elongated)
d.) The rotation of Earth on its tilted axis around the Sun gives us the seasons.
What are seasons and how are they caused?
Earth has seasons due to the tilt of its axis as it revolves around the sun.
What is the summer solsitice?
.
longest day/shortest night of the year. Occurs around June 21
What is the winter solsitice?
Shortest day/longest night of the year. Occurs around Dec. 21
What is the vernel equinox?
equal length of day and night. Occurs March 21
What is the annual equinox?
equal length of day and night. Occurs September 22
What is the law that states that all objects in the universe attracat every other object?
The Law of Universal Gravitation
The moon is the natural what to Earth?
Satallite
What are the factors that affect gravity and what are they?
Mass: the greater the mass, the greater the gravitational attraction.
Distance: the greater the distance, the weaker the gravitational attraction
We the Moon becausse of what?
reflected sunlight on its surface
What is a Phase?
The different shapes of the moon seen from Earth
The phases of the moon occur depending on what?
how much of the sunlit side of the moon faces Earth.
An eclipse occurs when an object in space comes between the Sun and another object, casting a what on that object?
Shadow
What is it called when the Moon passes between Earth and the Sun, blocking sunlight from reaching the Earth?
A Solar Eclipce
What is experienced when standing in the umbra?
A Total Solar Eclipce
What is an Umbra?
The darkest part of the Moons shadow during an eclicpe
What is expericened when standing in the penumbra?
A Partial Solar Eclipce
What Occurs at a full moon when Earth is directly between the Sun and Moon?
Lunar Eclipce(can be seen as total or partial)
What is the compostiton of the Sun?
1.The star closest to Earth
2.An enormous ball of gas ( mostly hydrogen and helium)
3.Produces energy through the fusion of hydrogen and helium
what is the nuclear fusion of H atoms produce energy in the core?
The Core
What is the outmost layer of the Suns interior?
The Convection Zone
What is the area of densely packed gas where energy moves through to the convection zone?
Radiation Zone
What are the layers of the Suns atmosphere in order form the middle out?
photosphere, chromoesphere, and corona
What is the Photosphere?
inner layer of Sun’s atmosphere/surface layer of Sun
What is the Chromoesphere?
middle layer
What is the Corona?
outer layer
What is the cooler areas of sun’s surface that appear dark
Sunspots
What are the massive columns of gas that arc out from Sun’s surface
prominences
What is gases near a sunspot that shoot outward at high speed
solar flares
What is large numbers of electrically charged gas particles emitted from the sun.
solar wind
