Answer:
The Bulk density = 1.3 g/cm³
the porosity of the sample is 132 cm³
Explanation:
Given:
Volume of cylinder = 260 cm³
Mass of container and the soil = 403 g
Mass of the empty container = 65 g
Thus,
The mass of the soil is = 403 - 65 = 338 g
Now,
The Bulk density = 
or
The Bulk density = 
or
The Bulk density = 1.3 g/cm³
also,
average particle density for mineral soil is usually given as 2.65 g/cm³
i.e the air present in the given soil sample has reduced its density from 2.65 g/cm³ to 1.3 g/cm³
The mass of the whole sample = Volume × Density
= 260 × 2.65
= 689 gm
but,
The actual mass of the dry sample = 338 g
thus,
Mass of air in the sample = 689 - 338 = 351 g
Therefore,
the volume of 351 g soil = 
= 
= 132.45 cm³
so the porosity of the sample is 132 cm³
Plate tectonics are important to geoloigists because they explain how the continents make up the earths crust.
Answer:
Yellowstone National Park
Explanation:
That point is located in Yellowstone National Park, about 1000 ft NW of the Old Faithful geyser, 280 ft north of the continental divide trail, and about 400 ft from the Old Faithful Basin Gift Shop.
The area is relatively flat at an elevation of about 7360 feet.
The correct answer is - B) wave erosion.
The beach erosion is a direct result of the wave action on the coastline. The waves are very powerful when it comes to erosion, and this is because they have big power, and also the chemical components of the water that are very effective too.
The sheer power of the waves contributes to the direct breaking of the rocks into smaller pieces over time, while the water itself, is reacting with the rocks on a chemical level and slowly decomposes them. As the rocks are getting smaller and smaller because of the erosion, the tiny fractions of sand particles are forming the beaches along the coastlines.
Answer:
<h2><em><u>Figure</u></em><em><u> </u></em><em><u>D</u></em><em><u>:</u></em> </h2><h2><em><u>Amazon</u></em><em><u> </u></em><em><u>river</u></em></h2>
Explanation:
<em><u>The Amazon is considered the world's largest river</u></em> by volume, but scientists have believed it is slightly shorter than Africa's Nile.
The Brazilian scientists' 14-day expedition extended the Amazon's length by about 176 miles (284 kilometers), making it 65 miles (105 kilometers) longer than the Nile.
<em>Amazon river is located in South America </em>
