Astronomy Flashcards
(30 cards)
What is the solar system
It consists of the sun, the 8 planets and their moons and billions of smaller celestial objects and all orbit the sun
Order of the solar system
- Mercury
- Venus
- Earth
- Mars
- Jupiter
- Saturn
- Uranus
- Neptune
Biggest planet in the solar system
Jupiter
Smallest planet
Mercury
What are gas giants
They are far away from the sun, large in size, composed mostly of hydrogen and helium and are called the outer planet of the solar system
What are Terrestrial planets
Close to the sun, small in size, made up of a solid surfaces, composed of rock and iron and are the inner planets of the solar system
What is the sun?
is a star composed of hot gases that radiates large amount of energy
What does the word “LUMINOUS” mean ?
producing light
The sun layers and their characteristics
Core: the hottest part of the sun and is where all energy is generated through nuclear
Radiative zone: surrounding the core it’s where the sun’s energy gets transported through radiation
Photosphere: glowing ball light is the photosphere
Chromosphere: the innner atmosphere
What is the distance between the Earth and the Sun in km?
One Au = 150million km
What is the moon?
A natural satilite
What is the distance between the Earth and the moon in km?
384,000km
Phases of the moon – names, shading
First quarter, waxing crescent, new moon, waning crescent, third quarter, waning gibbous, full moon, waxing gibbous
Why do we see different phases of the moon from the surface of the Earth?
The moon is lit up by reflecting the sun’s light and that side does always face the earth
Moon and the tides – why do we have high and low tides?
due to the moon’s gravitanational pull it pulls the earth’s
What does the word “non-luminous” mean?
Not emitting or producing it’s own light
What is the lunar eclipse
When the Earth lines up directly between the Sun and the Moon , it blocks the Sun’s light from reaching the Moon
what is the solar eclipse
It’s where the moon blocks out the sun from reaching the earth
How are solar and lunar eclipse different?
Different celestial objects blocks the sun and moon
What is the order of the celestial objects in each of them (as per the worksheet from class - all 5)
What is the Big Bang theory
it state that 14 billion years ago the universe was a single point and was extremely hot
WHAT IS LIGHT POLLUTION AND HOW DOES IT AFFECT US?
Light pollution is when excessive or inappropriate use of outdoor artificial it affects confuse our body’s internal clock the helps day and night activities and affects
HELIOCENTRIC/GEOCENTRIC MODEL What is the location of the Sun/Earth?
HELIOCENTRIC/GEOCENTRIC MODEL
What are they?
That everything is rotates around the sun
