Show:
stars
rotation & revolution of the earth
lunar phases
geologic time
fossils
100
What is a star?
A star is a giant luminous ball of super heated gas.
100
What is the difference between rotation and revolution?
rotation is when something spins around but covers no distance is when something spins around another thing and covers a distance.
100
How many lunar phases are there?
There are 8 lunar phases.
100
What was earth first formed out of?
gas and dust
100
what time period were the dinosaurs from?
Jurassic/cretacous
200
What does luminosity tell us about a star?
Luminosity can tell us how big a star in and how far away it is.
200
What do people who live the equator experience and don't experience?
people who live near the equator experience the same temperature everyday and don't experience seasons.
200
true or false: The lunar phases are caused by the moons orbit around the earth
True
200
True or false; rocks were drawn to the forming earth because of its gravitational pull
true
200
What is another name for the tertiary period?
age of mammals
300
Where does fusion occur?
What does luminosity tell us about a star?
300
What is an axis?
An axis is an imaginary line on which a planet rotates on
300
What is the last phase before the new moon called?
waxing crescent
300
What was the super continent called?
Pangea
300
What is a paleontologist?
a Scientist that studies fossils
400
What does it mean if a star is red.
If a star is red then in is a cooler and larger star.
400
what is the degree of earths tilt?
Earth is tilted 23.5 degrees
400
What is the difference between a lunar and solar eclipse?
A solar eclipse is when the moon casts a shadow on the earth and a lunar eclipse is when the moon moves into earth's shadow.
400
where is the oldest rock layer?
The bottom
400
What is the longest time period?
Precambrian
500
What is the HR diagram showing?
The HR diagram shows the relationship between temperature and luminosity.
500
is earth closer to the sun in summer or winter?
The earth is closer to the sun in winter
500
What is a total eclipse shadow called?
umbra
500
True or false; The moon formed the same way as the earth
False; it formed from earths debris after a giant impact
500
What Period are trees from?
Jurassic/cretaceous