Answer:
4. Glassy
5.phaneritic
6. Porphyritic
7. Alphanitic
Explanation:
Glassy or vitreous textures occur during some volcanic eruptions when the lava is quenched so rapidly that crystallization cannot occur. The result is a natural amorphous glass with few or no crystals. Examples include obsidian
Examples of aphanitic igneous rock include basalt, andesite and rhyolite.
Aphanitic rocks in contrast to phaneritic rocks, typically form from lava which crystallize rapidly on or near Earth's surface.
Porphyritic textures develop when conditions during cooling of a magma change relatively quickly
Explanation:
Answer:
The first question is b since the river starts from the source (as said in the name)
Explanation:
For 1. 2 this diagram will help you. (sorry it's sideways that was the only way it could fit.) ❤❤
A contour line is a line of 'equal height': every point on a contour is the same height above sea level.
The closer any two contour lines are the steeper the hill is: and the further apart they are the move level the ground.
If a group of contour lines suddenly move to form a V shape then the hill either has a promontory sticking out from it or a valley in it.
