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3 years ago

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Explain the formation of a glacial trough

1 answer:

nata0808 [166]3 years ago

3 0

Answer:

The formation of a glacial trough involves two processes abrasion and plucking. Abrasion is when pieces of debris in the glacier wear away at the rocks below, a bit like sandpaper. The sharper rocks in the ice can also cause scratches in the rocks called striations.

Explanation:

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This map shows the population density for different regions of the world. If this trend continues, what is one likely effect in

Alexxandr [17]

The Correct Answer is B

B) Food insecurity will increase.

Ex. The Population Will Increase If The Trend Continues and When The Population Reaches The Dark Shading, Then That's Over Populated and Means People Are Gonna Need More Food To Stay Alive and So The Population Can Keep Growing.

4 0

3 years ago

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In nuclear fission and fusion reactions mass is converted into energy. The average person in US uses around 100,000,000 J of ene

daser333 [38]

Answer:

a) The yearly energy consumption for a US population of 300 million is $3\times 10^{16} J/year$

b) The energy that would be released if a 60 kg person were converted entirely into energy is $5.4\times 10^{18}$ Joules.

c) 180 years would this amount of energy support a population of 300 million.

Explanation:

a) Average energy consumed by single person of US = 100,000,000 J/year

Then 300 million US citizen will consume:

300 million = 300 × 1,000,000 = $3\times 10^8$

The yearly energy consumption for a US population :

$100,000,000 J/year\times 3\times 10^8=3\times 10^{16} J/year$

The yearly energy consumption for a US population of 300 million is $3\times 10^{16} J/year$

b) $E = m\times c^2$

E = Energy from converted mass of m

c = speed of light

Given mass of person = m = 60 kg

$E=60 kg\times (3\times 10^8 m/s)^2 = 5.4\times 10^{18} J$

c) Energy calculated in part (b) = $E=5.4\times 10^{18} J$

The yearly energy consumption for a US population of 300 million in an year = $3\times 10^{16} J/year$

Let the that would be supported by $5.4\times 10^{18}$ Joules of energy be x.

$x\times 3\times 10^{16} J/year=5.4\times 10^{18} J$

$x=\frac{5.4\times 10^{18} J}{3\times 10^{16} J/year}=180 years$

180 years would this amount of energy support a population of 300 million.

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3 years ago

I need help on all of these

Aneli [31]

Are those suppose to be words?

7 0

3 years ago

What is a perennial river???

gayaneshka [121]

A perennial river can be defined as a river that is <u>continually flowing </u><u>throughout the </u><u>year </u><u>in at least some parts. </u>

A lot of rivers tend to dry up in the dry seasons because the supply of water from rain would be gone.

Perennial rivers:

Are capable of flowing all year round.
Include examples such as the Nile, the Mississippi, and the Amazon.

In conclusion, a perennial river is continuously flowing.

Find out more on benefits of perennial rivers at brainly.com/question/1152007.

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2 years ago

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Q1) Fill in the blanks with the correct words. (0.5x4=2M)

Mila [183]

Answer:

1. Ozone

2. Litmus paper

3. Mouse

4. Rust

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2 years ago