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DIA [1.3K]
2 years ago
13

What are the shock waves caused by an earthquake

Geography
2 answers:
docker41 [41]2 years ago
8 0

Answer:

B Seismic

Explanation: Cause it isn't electricity  going through the ground or we would always have earthquakes. And Infrared, sometimes called infrared light, is electromagnetic radiation and i don't think Infrared is causing earthquakes.

zvonat [6]2 years ago
6 0
Hey! The answer is B
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Our current best estimate is that the western Grand Canyon in Arizona began to be excavated by riser erosion about 6 million yea
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Answer:

0.267mm/yr

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Explanation:

Given the following:

Estimated time since erosion began = 6 million years

Greatest depth of canyon = about 1.6km

The mean rate of erosion in millimeter per year:

Mean rate = Depth of canyon / time

Depth of canyon in millimeter:

1 km = 1000000 mm

1.6km = (1.6 × 1000000) = 1,600,000 mm

Mean rate = 1,600,000mm/ 6,000,000 years

Mean rate = 0.26666 mm/yr

Mean rate = 0.267 mm/year

B.) If rate of erosion = 0.267mm/yr

Date of birth = 30 / 10 / 1992

Today's date = 5 / 9 / 2020

Date difference = 27 years 55 days

Total number of days = (27 *365) + 55 = 9,910 days

Rate of erosion per day = 0.267 / 365 = 0.0007315 mm / day

Change in depth from date of birth till today:

0.0007315 mm/day × 9,910 days

= 7.2492328 mm

= 7.25 mm deeper

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