The Exponential Growth & Decay Test

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When the word exponential is used, we know there is an increase in something. Here is an assessment test on the exponential growth and decay. Challenge yourself!

• 1.

Exponential decay is a phenomenon in which total value decreases but the proportion that it leaves...

• A.

Stays at zero.

• B.

Decreases over time.

• C.

Increases over time.

• D.

Remains constant over time.

D. Remains constant over time.
Explanation
Exponential decay refers to a process where the total value decreases over time. However, the proportion that remains constant over time means that the rate at which the value decreases remains consistent as time passes. This is in contrast to the other options, where the proportion either decreases or increases over time.

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• 2.

The number of offspring organisms produced per one existing organism in the population per unit time is referred to as...

• A.

Population

• B.

Birth rate

• C.

Ecosystem

• D.

Density

B. Birth rate
Explanation
The number of offspring organisms produced per one existing organism in the population per unit time is referred to as the birth rate. This measure indicates the rate at which new individuals are added to the population, providing insight into the population's growth and reproductive success. It is an important factor in understanding population dynamics and can be influenced by various factors such as environmental conditions, reproductive strategies, and availability of resources.

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• 3.

Which of the following is an essential parameter of exponential decay?

• A.

Decay constant

• B.

Population density

• C.

Eco value

• D.

Population growth rate

A. Decay constant
Explanation
The decay constant is an essential parameter of exponential decay because it determines the rate at which a quantity decreases over time. It represents the fraction of the quantity that decays per unit of time. A higher decay constant indicates a faster decay rate, while a lower decay constant indicates a slower decay rate. Therefore, the decay constant is crucial in understanding and predicting the behavior of exponential decay processes.

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• 4.

Exponential decay and growth does not apply to which of these fields?

• A.

Finance

• B.

Music

• C.

Physics

• D.

Mathematics

B. Music
Explanation
Exponential decay and growth do not apply to the field of music because these concepts are primarily used in fields such as finance, physics, and mathematics. In finance, exponential decay and growth are used to model investments and interest rates. In physics, these concepts are used to describe the decay of radioactive substances or the growth of populations. In mathematics, exponential functions are used to model various real-world phenomena. However, in music, there is no direct application of exponential decay and growth as it is not related to the fundamental principles or concepts of the field.

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• 5.

A graph that displays exponential growth has a curve in what shape?

• A.

B

• B.

H

• C.

J

• D.

K

C. J
Explanation
The correct answer, J, is a curve that represents exponential growth. Exponential growth is characterized by a rapid increase in value over time, where the growth rate is proportional to the current value. This results in a curve that starts off gradually and then becomes steeper and steeper as time progresses. The curve does not level off or decrease, but instead continues to rise at an accelerating rate.

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• 6.

For a graph to display exponential decay, the exponent must be...

• A.

Real

• B.

Negative

• C.

Zero

• D.

Positive

B. Negative
Explanation
In order for a graph to display exponential decay, the exponent must be negative. This means that as the input values increase, the corresponding output values decrease at an increasingly rapid rate. A negative exponent indicates that the quantity is decreasing exponentially over time or with each successive input value.

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• 7.

Which of the following is one of the parameters of exponential model?

• A.

Population growth

• B.

Population area

• C.

Population rate

• D.

Population inversion

A. Population growth
Explanation
One of the parameters of an exponential model is population growth. This parameter refers to the rate at which a population increases over time. In an exponential model, the population growth parameter is typically represented as a constant value that determines the rate of population growth. This parameter is important in understanding and predicting population dynamics and can be used to study various aspects such as population growth rates, carrying capacity, and sustainability.

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• 8.

Which of these is an example of exponential function?

• A.

Human race

• B.

Bacteria growth

• C.

Population

• D.

Plant

B. Bacteria growth
Explanation
Bacteria growth is an example of an exponential function because it follows a pattern of rapid and continuous multiplication. As time passes, the number of bacteria increases exponentially, meaning that the growth rate is proportional to the current population size. This can be represented by an exponential equation, where the population size at a given time is a constant multiple of the previous population size.

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• 9.

Which of the following occurs when the growth rate is negative?

• A.

Population

• B.

Exponentiality

• C.

Death

• D.

Exponential decay

D. Exponential decay
Explanation
Exponential decay occurs when the growth rate is negative. In exponential decay, a quantity decreases over time at a constant rate. This is in contrast to exponential growth, where a quantity increases over time at a constant rate. When the growth rate is negative, it means that the quantity is decreasing, resulting in exponential decay.

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• 10.

When the available resources in a habitat is unlimited, the population of an organism living in the habitat grows...

• A.

Arithmetically

• B.

Exponentially

• C.

Ridiculously

• D.

Spontaneously

B. Exponentially
Explanation
When the available resources in a habitat are unlimited, the population of an organism living in the habitat grows exponentially. This means that the population increases at an accelerating rate over time. As there are no limitations on resources, such as food or space, the organisms can reproduce and survive at their maximum capacity, leading to a rapid growth in population size.

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• Current Version
• Mar 21, 2023
Quiz Edited by
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• Dec 19, 2017
Quiz Created by
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