I need alittle bit of help in this Q

Which reservoir in the water cycle contains the most water?

Maslowich

The largest water reservoir is the ocean, containing 97.3% of all water on Earth.

4 0

3 years ago

P and S waves from an earthquake travel at different speeds, and this difference helps locate the earthquake "epicenter" (where

Studentka2010 [4]

Answer:

(a) Since both P and S wave travels the same distance, so it can be written as: Δx = V₁t₁ = V₂t₂,

Where, V₁- Speed of S wave

V₂- Speed of P wave

t₁- time taken by S wave

t₂- time taken by P wave

Therefore, t₁ > t₂ (since, time taken by S wave is longer than P wave)

⇒ t₁ = t₂ + 1.5 min

⇒ t₁ = t₂ + 90 sec

⇒ V₁ (t₂ + 90 sec) = V₂ (t₂)

⇒ V₁t₂ + V₁ (90 sec) = V₂ (t₂)

⇒ V₂t₂ - V₁t₂ = V₁ (90 sec)

⇒ t₂ (V₂- V₁) = V₁ (90 sec)

⇒ t₂ = {V₁ (90 sec)} ÷ {(V₂- V₁)}

⇒ t₂ = {5.5 × (90 sec)} ÷ {(8.5 - 5.5)}

Therefore, t₂ = 165 sec

Since, Δx = V₁t₁ = V₂t₂

Now, Δx = V₂t₂ = (8.5 × 165 sec)

⇒ Δx = 1402 km

Therefore, Δx is approximately 1400 km (this means that the earthquake occurred at a distance of about 1400 km from the recorded seismic station)

(b) No, Only seismic station is not sufficient to detect the epicenter of an earthquake. Seismologists and geologists usually use the triangulation method in order to determine the exact location of the epicenter. This is possible by the use of three seismographs that are placed at three different locations nearby to that earthquake occurring position.

8 0

3 years ago

Non-Alaskan grizzly bears are indicator species for mountain ecosystems. In the nineteenth century, the grizzly bear nearly went

borishaifa [10]

Explanation:

Animal indicator list is a barometer to check how a particular ecosystem is affecting the lives of particular animals. The indicator measures stress or behavior in the ecosystem to know whether to protect the specie or allow them undisturbed

This is to avoid or reduce to barest minimum incidences of extinction of such specie in the ecosystem.

The grizzly sudden reduction in number from well over 100,000 in California to less than nothing in 1942 triggered the need to protect the grizzlies from human destruction and possible extinction. Grizzlies was a national specie and appeared in the flag of California. The population gradually reduced in most of the states of Idaho, Utah, Alaska and many more.

The grizzlies in 1975 were declared protected species to avoid being hunted or trapped by humans and to repopulate them in the areas where they once lived. Their future will depend largely on humans ability to allow them to coexist with them, by setting out a large area for them to live and regroup.

This will go to balance the ecosystem which has been tampered or disturbed by development.

4 0

3 years ago

Identify the given transformation.

Gnoma [55]

Answer: Try this

Explanation:

Transformation means movement of objects in the coordinate plane. Transformation can be done in a number of ways, including reflection, rotation, and translation. Reflection is flipping an object across a line without changing its size or shape.

4 0

3 years ago

A group or a chain of islands, Example: greater and lesser Antilles

borishaifa [10]

Answer:

A group or a chain of islands is called archipelago.

Explanation:

The seas and oceans are not just open spaces of water with nothing interrupting them, instead they have hundreds of thousands or even millions of islands rising from them. The islands vary in size, and what can be considered as an island is still debatable, but they can be anywhere from few tens of meters to hunderds of thousands of square km.

The chains or groups of islands are called archipelago. In order to distinguish them from one another they have to have some similraties and most often they need to have the same geological history and processes that created them. An archipelago can be formed in multiple ways. Along the subduction zones there are always archipelagoes, and this is due to the volcanic activity. Another creator of archipelagoes are the hot spots because they are static but the plates move on top of them, thus draging the islands from the hot spot and new rising above it. Also, if the characteristics of the topography of an area are such that when the sea levels rise, there can be a formation of an archipelago where the lower areas will be under water while the higher places would remain above water.

5 0

3 years ago