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3 years ago

How are radioactive isotopes used to determine the absolute age of igneous rock

Geography

1 answer:

Sonbull [250]3 years ago

5 0

Answer:

Radioactive isotopes are unstable and will decay. ... The isotopes will decay into a stable isotope over time. Scientists can tell how old the rock was from looking at the radioactive isotope's half-life, which tells them how long it would take for there to be half the radioactive isotope and half the stable isotope.

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The European Union (EU) was formed to advance the economic goals of Europe. Countries of the EU open their borders to member nat

REY [17]

The type of region described is an economic region because many of the goals of the EU have to do with trade, jobs, and the economy.

7 0

3 years ago

Read 2 more answers

Pls help me i'll give brainlyest

stiv31 [10]

Answer:

Landslide is the rapid downhill movement of a mass of rock, debris, or soil

Mudflow is the rapid downhill movement of a mixture of rock soil and water.

Slump is a loosely connected mass of rock and soil

Creep is the slow downhill movement

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3 years ago

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A(n) is a bend in a steep narrow bedrock valley. 2. The lowest level to which a stream can erode is called . 3. A(n) is the remn

borishaifa [10]

Answer:

1. Incised meander.

2. Base level.

3. Terrace.

4. Lake

5. Meander.

6. Floodplain.

Explanation:

Erosion can be defined as a geological process which typically involves the wearing out of earthen (soil) materials and the transportation of these materials by natural forces like water, wind, etc. Soil erosion is greatest when the soil is steep.

The steepness of a body such as river or stream refers to the downward slope or gradient of the body of water.

Generally, the steepness of a body affects the rate at which other materials would flow or move around. Thus, the steeper a river or stream, the greater would be its rate of erosion.

Some of the characteristics of an erosion include the following;

1. An incised meander is a bend in a steep narrow bedrock valley. It avails a river large amount of vertical erosion power and as such enabling a downcut.

2. The lowest level to which a stream can erode is called a base level. Some examples are dam, waterfall, lake, stream, etc.

3. A terrace is the remnant of a former floodplain.

4. Examples of local base level include a stream or a lake.

5. A sweeping bend of a stream which is migrating laterally in a wide, flat valley is called a meander.

6. The flat, broad area surrounding a stream is referred to as a floodplain.

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3 years ago

which would take longer to travel from St Louis Missouri to Milwaukee. Wisconsin or Louis, missouri to Miami, Florida

Alexxx [7]

St. Louis to Milwaukee

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4 years ago

How does altitude impact atmospheric pressure? As altitude decreases, atmospheric pressure decreases As altitude increases, atmo

Tasya [4]

Answer: As altitude increases, atmospheric pressure decreases

Explanation:

Atmospheric pressure $P$ is defined as the force $F$ per unit area $S$ the air that forms the atmosphere exerts on the Earth's surface:

$P=\frac{F}{S}$

It should be noted that as the altitude increases less air is above and, therefore the air weights less. This is because the atmosphere losses density as we ascend, causing less air.

However, it is important to point out this decrease in pressure is not linear, since at the beginning (in the first kilometers above sea level) it reduces more rapidly than in the next kilometers above. That is why this relationship between atmospheric pressure and altitude is exponential.

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3 years ago