Origin Of The Earth & Solar System

What is Oceanagprahy

Is the scientific study of all aspects of the marine environment

Having a large benefit for climate regulation, economy, transportation, recreation, food and medicine

What is meant by interdisciplinary

It relates to more than on branch of science, like biology, chemistry, geology, astronomy and more

Why would we call earth by another name?

Earth means terra, meaning dirt, while E is made up of 70% of water,

In order for a scientific explanation to be considered a theory, the experiment must be what?

1. Observe and Question

2. Formulate Hypothesis

3. Design Experiment

4. Collect and Analyze data

5. Draw Conclusion

6. Is it repeatable?(Has to be)

7. Theory!

It must be repeatable

A popular explanation for the origin of our solar system is referred to as what?

Nebular Hypothesis- Formed from a cloud of dust & gas, ionized particle, called a nebula

What is meant by accretion and what is the significance with regards to the planets? 

Accretion means continous build of material, in regards of planets, the gas & dust, ionized particles continously build up making the planet

Name the Inner Planets

Mars, Venus, Earth, Mercury

Name the Outer Planets

Jupiter, Saturn, Uranus, Neptune

Define a planet.

-In orbit around a star

-Has sufficient Mass to assure a nearly spherical shape (~900 km diameter)

-Is not a satellite (smaller planetary body, revolves or orbits a planet)

-Has cleared the neighborhood around its orbit

Define dwarf planet

Same as planet but has NOT cleared the neighborhood around its orbit

Names of the Dwarf Planets

-Ceres: Located within asteroid belt

-Pluto: Outside neptune’s orbit

-Haumea: Next further out

-Makemake: Next Further out

Why did Pluto get demoted?

It did not clear the neighborhood arounds its orbit

What happened to Ceres?

It got promoted from largest asteroid to a dwarf planet

What is a likely explanation for the formation of the Moon?

There was a large planetary object that hit and broke into a lot of pieces, rotating the earths orbit and forming into the moon by accretion

What caused Eath’s axis to tilt?

Earth was hit by a large planetary object called ‘Theia”

How much is the axis tilted?

23.5*

What is the difference between a meteor and a meteorite?

-Meteors are are very small meteoroid that vaporizes as it enters the atmoshphere causing a flashing light

-Meteoroids are objects that strike the surface or explode very close to the surface

What is the general composition of a comet?

Frozen carbon dioxide gas or dirty ice balls

What is the Kuiper Belt

A Flattish ring of comets outside of neptunes orbit, but not pluto’s

What is the Oort Cloud

Outer Most boundary of solar systems, sphere of comets that surrounds & defines the outermost solar system

Define density stratification.

Accumilation of layers, where the densest material occupies the lowest space

How is Earth's magnetic field generated?

When molten iron spirals & churns within the outer core

What are the benefits of Magnetosphere.Geomagnetic Field?

-Protects atmosphere from being blown away by solar wind

-Protects lifeforms form being radiated by the solar wind

-Results in Northern & Southern lights (changed by solar winds interacting with atmosphere gases)

What is Outgassing?

Gas created by volcanoes erupting, releasing water vapor, CO2, SO2, N2, Cl2, H, etc.

How did the Earth's first atmosphere differ from today's?

First Atmosphere formed H2 & He but are quickly stripped away by solar winds which was made of plasma - stream of atom particles

When and how did Earth's early oceans form?

-Basins fill with acidic water, possibly green in color

-Acidic rain & water quickly dissolve minerals from rocks

-Salts slowly accumulated in oceans 4 billion years ago

What is an extremophile?

Why is photosynthesis a vital process for the development of life on Earth?

What are today's seven seas?

-North and South Pacific Ocean

-North and South Atlantic Ocean

-Artic Ocean

-Indian Oceans

-Southern Ocean