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2 years ago

Scientists estimate there are approximately 100,000 galaxies in the universe. True or False

Geography

2 answers:

nirvana33 [79]2 years ago

4 0

Answer:

false

Explanation:

there are more than 100,000 galaxies.

Ulleksa [173]2 years ago

3 0

False. There are more than that. There’s probably billions of them

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If a modern astronomer describes a faint star as being in the constellation cygnus, the swan, you know that the star is

Leni [432]

<span>If a modern astronomer describes a faint star as being in the constellation cygnus, the swan, you know that the star is: </span><span>Somewhere within a particular region of sky having definite boundaries
</span>The swn of the constellation cygnus is located on northern part of the constellation. This means that the location is limited to the plane part of the milky wat.

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2 years ago

Which term describes the rising of cold water from deeper layers to replace warmer surface water??

larisa [96]

The term is upwelling that is the answer to your question.

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2 years ago

Read 2 more answers

How are rocks DIFFERENT from minerals? A) Rocks are a pure substance and minerals are all mixtures. B) Rocks have no physical or

Elena L [17]

The answer is C) Rocks are made up of one or more minerals, but minerals are not made up of rocks.

Let's look into the options one by one:

A) Rocks are a pure substance and minerals are all mixtures.

-This is false.

-The fact is the exact opposite, where rocks are mixtures of minerals while minerals are pure substance. For example, granite, a type of rock, is composed of quartz, mica and feldspar.

B) Rocks have no physical or chemical properties similar to minerals.

-This is false.

-As rocks are formed by different types of minerals, often can you find the properties of rocks similar to minerals especially when one mineral component is high.

C) Rocks are made up of one or more minerals, but minerals are not made up of rocks.

-This is correct.

-Most of the rocks are made up of more than one type of minerals given the minerals are mixed together or produced during different formation. We can therefore see that minerals are not made up of rocks but a component of rocks.

For example, the granite mentioned from above is formed when intrusive volcanicity occurs, when the magma cools down, more than a type of minerals are formed, putting together forming granite.

D) Minerals are made up of at least two rocks, but rocks are not made up of minerals.

-This is false.

-As from above, minerals are not made up of rocks, while rocks are made up of minerals.

Therefore the answer is C) Rocks are made up of one or more minerals, but minerals are not made up of rocks.

Hope it helps!

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2 years ago

One reason the cultures of North Africa developed differently from the cultures of the rest of Africa was that these areas of Af

Alika [10]

B. The Sahar desert. The people from the south east of the continent migrated to other parts of Africa but not north Africa because the Sahara was in their way. This led to the ottomans to easily lay claim to North Africa and develop a Islamic and Arabic like culture.

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2 years ago

Read 2 more answers

Identify the true statement. Choose one: A. The angle of repose is the steepest angle at which unconsolidated sediments can sit

Margarita [4]

Answer:

A. The angle of repose is the steepest angle at which unconsolidated sediments can sit without slipping downhill

Explanation:

The angle of repose is the steepest angle at which unconsolidated sediment can be piled without sliding downward. The angle is also known as critical angle . At this angle the unconsolidated sediments are at the verge of slumping . The angle between the surface of the piled sediments and the horizontal surface is the angle of the repose. At this angle the unconsolidated sediments have reached it limit of accommodating more materials unless it will slump downward.

The make up of the unconsolidated sediments can affect the angle of repose as rounded and fined gained rocks cannot be piled as rough texture d rock materials. The angle of repose can also be affected by the amount of solvents in the sediment. Various rocks sediments possess different angle of repose. Same sediment material can possess different angle of repose if the water contents varies .Example, the angle of repose for sand varies depending on the water contents. The true statement is option A.

The picture above illustrate the angle of repose.

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2 years ago