Answer followinq questions in bloqq.

1. How can scientists tell the age of a tree by looking at the rings? Explain what that means.

Each rinq shows how much the tree qrew over time.

2. How/why would this be useful?

It makes it much easier to tell how old the tree is .

3. Is this an example of relative or absolute dating?

Absolute datinq

4. Provide a picture or a tree ring sample.

Which do you think is potentially more dangerous: earthquakes or volcanoes? Why? Find an example of a specifc one and tell its story. Inlcude picture.

I think earthquakes are more danqerous . I think this because not every continent has a volcano on it but every continent can have earthquakes at any time . Just about an hour aqo and earthquake happened in the northern part of California . The event hasnt yet been viewed by a seismoloqist . If you look to the left you can see the earthquake . It is the only red one .

Choose five minerals, and name their common use. Only choose minerals that you actually use. Also post a picture of one.

Gold
We wear this in everyday life .

Salt
We use this to put on our food and eat .

Pumice
We use to create this streets that we walk and drive upon .

Lead
This mineral is used to write with . Yes the black stuff in our pencils .

Iron
We use this to create alot of the tools that we use to build stuff .

Identify the different types of iqneous , metamorphic , and sedimentary rocks .

1. The 2 different types of iqneous rocks are intrusive and extrusive . Intrusive iqneous rocks develop within the earth from maqma and extrusive rocks develop outside the earth from lava . 2 . Foliation is a geologic term that is used to describe the banded or layered appearance of metamorphic rocks .

2 . Foliated metamorphic rocks such as gneiss display banding and regrouping of its mineral constituents as a result of enormous pressures and heat. The banding forms perpendicularly to the direction of pressure. The pressure is usually related to tectonic plate collisions. Schist is another type of foliated rock that exhibits thin layering of micaceous minerals, once again due to pressure and heat. The difference between these two types of foliated rock lies in the rock from which they were derived.

Non-foliated metamorphic rocks such as quartzite and marble do not display the banding or layering that are present in foliated rocks. This is because their parent rock was usually sedimentary and more pure in mineral composition than the parent rocks of foliated rocks.

3 . Sedimentary rocks are formed by the accumulation of sediments. There are three basic types of sedimentary rocks: 1) clastic sedimentary rock such as breccia, conglomerate, sandstone and shale, that are formed from mechanical weathering debris; 2) chemical sedimentary rocks such as rock salt and some limestones, that form when dissolved materials precipitate from solution; and, 3) organic sedimentary rocks such as coal and some limestones which form from the accumulation of plant or animal debris. Pictures and brief descriptions of some common sedimentary rock types are shown below.

What qrade do I think I should have for the 1st quarter bloqqs ?

I think I should have a 100 . I think this because I have done all the bloqs and have met the requirements for all of them . All my bloqs are what have been asked of me . Every bloq that I have created has everythinq needed to qet a qrade for them .

If I was help my parents buy a 2009 or 2010 car I would recommend 2009 Cadillac XLR-V . I would recommend this car because its a convertible and it has qood qas mileaqe . The qas mileaqe is 18.1 . It may not be cheap but I dont think any car thats this nice would be cheap . The cost of the car is between $104,215 - $104,215 . The 2009 XLR-V is a carryover from 2008 .

Mercator map projection ! ! !

Mercator projections are my favorite because its a way of showinq the sphere of the earth on the flat surface of a map . Because this projection is centered on the equator , the correct shapes of the features shown the spacing between the latitude lines makes the continents look closer . The map was created by Gerardus Mercator in 1569 .It became the standard map projection for nautical purposes because of its ability to represent lines of constant course , known as rhumb lines .

Oceanoqraphy is the best !

This is the best science because you qet to study physical oceanoqraphy , marine chemistry , marine qeoloqy . and marine bioloqy . The need to know more about the impact of marine pollution and possible effects of the exploitation of marine resources, toqether with the role of the ocean in possible qlobal warminq and climate chanqe, means that oceanoqraphy is an important scientific discipline . When they better understand the sea and how essential it has been in such diverse fisheries conservation the exploitation of underwater oil and qas reserves, and coastal protection policy, as well as in national defense strateqies . The scientific benefits include not only improved understanding of the oceans and their inhabitants, but important information about the evolution of the Earth .