7L The Solar System And Beyond Flashcards
What does all life on earth depend on
The sun
Why do we have day and night
Because Ethel earth spins on an axis one part of the planet is facing away from the sun and therefore in night time
What is an orbit
The path a planet takes
The orbit of the earth is shaped like an
Ellipse
What is a year
How long a planet takes to travel around the sun once
How long is a earth year
365.25 days
Why do we have a leap year
Because an earth year is 365.25 days long we make a year 365 days long and every four years we add an extra day to February to make up for the extra time
Hoe long is a lunar month
29.5 days
What is an natural satellite
Something whic orbits a planet which is not man made . The moon for example only natural satellites of earth
What is a satellite
Something that orbits a planet
What do we mean when we say the moon has no atmosphere
It has no air no wind and no rain . It is devoid of life
What is a full moon
When can see all of the lit part of the earth
What is the new moon
When we can not see any of the lit part of the earth
What is a total eclipse
When the sun is totally blocked out
What is solar eclipse
People who stand in the shadow of the moon
What is a partial eclipse
When only a part of the sun is blocked out
When the moon moves into the shadow of the earth it looks very dark . What is the name of this eclipse
Lunar eclipse
Planets in the solar system including dwarf
8 planets names are mercury , Venus , Earth , mars , Jupiter , Saturn , Uranus and Neptune
3 dwarf planets are Ceres between mars and Jupiter
Pluto after Neptune
Eric’s after Pluto
What is a star
Huge balls of gas that give out light and heat
What is the sun
A star
Why does the sun seem brighter than other stars
Cos the other stars are further away
Measure distance in space
Light years
Name order Galaxy Solar system Universe Stars
Stars and planets
Solar system
Galaxy
Universe
Name of our galaxy
Milky Way
What type of reactions inside stars make them give out light
Nuclear
Weight formula
Mass multiplied by gravitational field strength
Why are the days longer in summer in England
When it is summer in England the northern half of the hemisphere is tilted toward the sun so as the earth turns it the suns reach it for more of the day
Why is it hotter in summer
Because the suns rays are spread over a smaller are of land the heat is concentrated land gets warmer
