Geography College

What is the scale of the map? For this activity, you will use centimeters.

1 cm = 405 km

Choose one strip of seafloor rock. What is the age of the rock?

20

Use your ruler to measure the distance of the strip from the Mid-Atlantic Ridge.

3 cm

Using the calculator, multiply the answer to #4 by 405 to figure out its distance in kilometers. Round to the nearest whole number.

i multiply 3 by 405 and get 1215 km

Determining Rate of Spreading
Use the age of the rock you have chosen and its distance from the Mid-Atlantic Ridge to calculate seafloor spreading.

First you will find out how fast the seafloor is moving away from the ridge on one side. Use a calculator to divide the answer to #5 by the answer to #3. Round to the nearest whole number.

#5 km ÷ #3 million years = km/million years

What Is The Scale Of The Map? For This Activity, You Will Use Centimeters. 1 Cm = 405 KmChoose One Strip

Answers

Answer 1

Final answer:

The scale of the map is 1 cm = 405 km. Using the scale, we can calculate the distance from the Mid-Atlantic Ridge to the seafloor rock strip. By dividing this distance by the rock's age, we can determine the seafloor spreading rate.

Explanation:

The scale of the map is 1 cm = 405 km. So, if you measure a distance of 3 cm on the map, you need to multiply it by 405 to get the actual distance in kilometers. In this case, 3 cm multiplied by 405 equals 1215 km. Therefore, the distance from the Mid-Atlantic Ridge to the strip of seafloor rock is approximately 1215 km.

Next, we can use the age of the rock, which is given as 20 million years. To calculate seafloor spreading, we need to find out how fast the seafloor is moving away from the ridge on one side. Divide the distance of 1215 km by the age of 20 million years. The result is approximately 60.75 km/million years.

Therefore, the seafloor spreading rate on one side of the Mid-Atlantic Ridge is approximately 60.75 km/million years.

Answer 2

The rate of seafloor spreading calculated from the student's activity is 61 km per million years, using the map scale of 1 cm = 405 km and a rock strip that is 20 million years old and 3 cm away from the Mid-Atlantic Ridge.

To calculate the rate of seafloor spreading, one must use the scale of the map and measurements taken from it. The given map scale is 1 cm = 405 km, and the chosen strip of seafloor rock is 20 million years old and is located 3 cm from the Mid-Atlantic Ridge. By multiplying 3 cm by the scale value (405), the distance from the ridge is determined to be 1215 km. To find the rate of spreading, divide the distance by the age of the rock:

1215 km (distance from the ridge) ÷ 20 million years (age of the rock) = 60.75 km/million years

After rounding to the nearest whole number, the rate of seafloor spreading in this example is 61 km per million years on one side of the ridge.

Related Questions

How will a short-term environmental change most likely affect organisms within an ecosystem? Check all that apply.
A. It will lead to some deaths.
B. It will lead to speciation.
C.It will lead to adaptation.
D. It will lead to forced migration.
E.It will lead to changes in behavior.

Answers

Answer:

A. It will lead to some deaths.

D. It will lead to forced migration.

E.It will lead to changes in behavior.

Explanation:

    More than 60% of the resources and services provided by the planet's ecosystems are degraded, and the consequences of this destruction could worsen significantly over the next 50 years, warns an international study published in 2015. Freshwater, fisheries, and air and water regulation Water, regional climates, natural disasters and pests are the most endangered natural resources and services, says the Millennium Ecosystem Assessment, prepared by 1,300 scientists from 95 countries. Degradation of 15 of the 24 ecosystems studied increases the likelihood of abrupt changes that can severely affect the well-being of all biodiversity on the planet, such as the emergence of new diseases, sudden deterioration in water quality, the collapse of fishing grounds and changes in regional climates.

    The extinction rates of animal and plant species are increasing on an unprecedented scale. The average abundance of native species in most major terrestrial habitats has fallen by at least 20%, mostly since 1900. More than 40% of amphibian species, almost 33% of corals and more than one third of all mammals are threatened. .

Answer:

-It will lead to some deaths.

-It will lead to forced migration.

-It will lead to changes in behavior.

Explanation:

I took the test and got a 100, all of these above affect the environment short term.

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