Show:
Sun-Moon-Earth
Solar System
Star & Galaxies
Clue's to Earth's Past
Geologic Time
100
When hours of the daylight and night time are equal during the what
What is an equinox
100
The planet with the lowest density and hundreds of rings
What is Saturn
100
The intense magnetic field associated with Sunspot that can cause a huge arching column of gas
What is a prominence
100
When geologist calculate the absolute age by half-life of an isotope.
What is radiometric decaying
100
What index fossil was one of the first hard-shelled insects
What is a trilobite
200
When the moon temporarily blocks the sunlight reaching Earth
What is a solar eclipse
200
The causes of greenhouse gas in Venus and Earth
What is unnatural gas
200
Which close star is not part of the binary system
What is the Sun
200
The process that uses properties of atoms from rocks and other objects to determine the age.
What is absolute age
200
The part of the rock that DOES NOT have fossils
What is the oldest rock
300
An elongated, closed curve
What is an axis
300
One theory about how the Sun was formed
What is a Cloud of Dust
300
The galaxy with more than 200 million and less than 800 million stars
What is the Milky-Way
300
Bones that are composed of minerals
What is Permineralized bones
300
The longest period of Earth's history
What is the Precambrian time
400
When Earth's shadow falls on the moon
What is a lunar eclipse
400
The reason the planets of the Sun
What is gravitational pull
400
90% of all stars
What are main sequence
400
When you compare the age of an object to another object
What is relative dating
400
Blue-green algae
What is Cyanobacteria
500
When the sun has reached its northernmost point.
What is Spring
500
A.K.A shooting stars
What is a meteor
500
The hottest stars in space
What are blue stars
500
Carbonaceous, casts, molds, trace, burrows, original remains, and mineralized are all types of what
What is a fossil
500
The animal that first appearing in the Triassic Period
What is the dinosaur