Eons and Era
Eons and Eras are used to measure this?
Time or Distance
TIME
Eons and Eras measure large distance
Did Earth have an atmosphere during the Haedean Eon?
Yes or No
Yes
early atmosphere was formed from volcanic gases
When a larger asteroid hits, it is often referred to as this?
Deep Impact or Impact event
Impact event
Especially when a significant impact occurs and causes lasting geological or climatic effects.
During the Hadaen Eon there were Oceans
Yes or No
No
It was too hot, any water would have evaporated in the air or into space.
Whats the name of the third Eon of Earth
Proterozoic Eon
Which is longer Eons or Eras?
An eon is the largest unit of time
During the Archaen Eon the earth atmosphere was breathable
Yes or No
NO!
Archaen Eon was rich in gases like carbon dioxide, methane, and ammonia, and containing virtually no free oxygen.
Earth was hit by many asteroids and comets during this stage.
BOMBARDMENT! or Impact
Bombardment!
A period of intense asteroids and comet impacts that occurred around 4 billion years ago, lasting for tens to hundreds of millions of years
The first Oceans were during Archean Eon
True or False
True.
As the planet cooled oceans began to form
What gas makes up majority of Earths Atmosphere?
The Earth's atmosphere is made up primarily of nitrogen (about 78%) and oxygen (about 21%), with smaller amounts of other gases like argon
What is the first Eon?
Hadean or Archean
Hadean
which began about 4.5 billion years ago with Earth's formation
During the Paleozoic Eon the atmosphere was breathable?
Yes or No
Yes!
The atomsphere during the Paleozoic Eon was composition was becoming similar to today's atmosphere, with significant oxygen levels that supported the explosion of life during this era.
What large impact of a large body that slowed the Earth down and gave it its only satellite
Mars or the Moon
The moon
From asteroids and comets or Plants and animals
Asteroids and comets
Also believe water came from mineral trapped in rocks and released by volcano eruptions
What is the sign for volcano
Check the power point slide?
Which is the the longest Eon
Proterozoic or Archean
Proterozoic Eon
A span of about 1.96 billion years.
The atmospher had a large increase of oxygen on earth thanks to this
Trees or Cynobacteria
Cynobacteria
The Heavy bombardment stage of Earth ended in which Eon?
Archean or Hadean
Hadean Eon
Late Heavy Bombardment, ended approximately 3.8 billion years ago, which corresponds with the end of the Hadean Eon
The first ice age of earth happen in this Eon?
Archean or Proterozoic Eon
Proterozoic Eon
approximately 2.4 to 2.1 billion years ago. This ice age is thought to be the first "Snowball Earth" event, where Earth's surface became entirely frozen.
What is the name of the 3rd Eon
Proterozoic Eon
approximately 2.4 to 2.1 billion years ago. This ancient ice age was characterized by a drastic decrease in temperature and is thought to be the first "Snowball Earth" event, where Earth's surface became entirely frozen.
An Era marks a change in this
Life forms or Asteroid impacts
Eras are marking significant changes in Earth's geology and life forms
What is a dangerous gas?
Oxygen or Argon
Argon
If a asteroid hits its called
Meteor or meteorite?
lands on the surface is called a meteorite
Another theory on how earth received its water is from this
Volcanic eruption or The Moon
Volcanic Eruption
Vaalbara is thought to be the first continent that formed. Name one of the two current day locations where Vallbara started. Ill take a direction and a continent. Like East Vacatcan City or West Chile
Western Australia and South Africa.