WorksheetsIntro to Environmental Science- Bio & Chem Recap
Total questions: 25
Worksheet time: 13mins
An ecosystem is a particular location on Earth with interacting living (biotic) and nonliving (____________) components.
Botulism
Abiotic
Carbon
Dead
As of August 2019, what is the global human population?
3 billion people
5.2 billion people
7.7 billion people
9.1 billion people
12.5 billion people
An environmental indicator is something that describes the current state of an environmental system. Which of the following would not be considered an environmental indicator.
Carbon dioxide
Extinction rate
GDP (Gross Domestic Product)
Species diversity
Biodiversity is the variety of life forms in an environment. Which of the following types of diversity would biomes be categorized as?
Ecosystem diversity
Species diversity
Genetic diversity
Planetary diversity
Speciation (the evolution of new species) happens very slowly. Approximately how many new species evolve worldwide/year?
None
1-3
4-10
11-100
100+
The average rate at which species go extinct over the long term is referred to as the Background Extinction Rate. Traditionally, the background extinction rate has been about 2 species/year worldwide. How many species are currently going extinct each year?
1-5
6-10
50-100
100-1000
1000+
Greenhouse gases are gases in Earth's atmosphere that trap heat near its surface. Which of the following is the most damaging greenhouse gas?
CO
CO2
SO2
NO
Living on Earth in a way that allows humans to use its resources without depriving future generations of those resources. This is the definition of __________________.
Resource Depletion
Sustainable Development
Human Impact
Sustainability
Which of the following is the correct order for the steps of the scientific method?
Form a Hypothesis, Ask a Question, Disseminate Findings, Conduct Experiment, Write Conclusion, Interpret Results
Interpret Results, Write a Conclusion, Have a Question, Conduct Experiment, Disseminate Findings, Form a Hypothesis
Have a Question, Form a Hypothesis, Conduct Experiment, Interpret Results, Write Conclusion, Disseminate Findings.
What kind of hypothesis is "A prediction that there is no difference between groups or conditions, or a statement that can be proved wrong."?
A zero hypothesis
A true hypothesis
A null hypothesis
A hypothesis
Identify the correct order:
Hypothesis -> Theory -> Law
Hypothesis -> Law -> Theory
Theory ->Hypothesis -> Law
Law -> Theory -> Hypothesis
In a scientific experiment, a control group is exposed to the single variable being studied whereas the experimental group is not.
True
False
Anything that occupies space and has mass is ____________.
An atom
An isotope
Matter
A molecule
Which of the following is an example of a compound?
Carbon (C)
Oxygen (O2)
Nitric acid (HNO3)
Sulfur (S)
When the nuclei of isotopes are unstable they undergo radioactive decay, the spontaneous release of material from the nucleus. The measure of this decay is called ___________.
Mass number
Half-life
Atomic number
Covalent bond
A molecule in which one side is more positive and the other side more negative is a ___________.
Covalent bond
Ionic bond
Hydrogen bond
Polar bond
This picture represents what water phenomenon?
Surface tension
Capillary action
pH neutrality
Universal solvent
The pH scale shows how acidic or basic a solution is. It works on a scale of 14, where 0 is most acidic, 14 is most basic and 7 is neutral. Seawater is mildly basic. What number on the pH scale would you guess it has?
2
5
8
11
Matter cannot be created or destroyed, it can only change forms. This is the definition of _________________.
The law of conservation of matter
The first law of thermodynamics
Organic compounds are the basis of biological molecules important to life. Which of the following is not an organic compound?
Carbohydrates
Water
Proteins
Nucleic acids (DNA)
Lipids (Fats)
If energy is the ability to do work or transfer heat, then power is...
equal to one calorie
the strength of electricity
the rate at which work is done
A form of energy emitted by the Sun.
Kinetic energy
Electromagnetic radiation
Chemical energy
Potential energy
Which light bulb is more energy efficient?
LED (Light-emitting diode)
CFL (Compact fluorescent lamp)
Incandescent
Someone who performs a systems analysis is less concerned with which of the following?
Inputs
Outputs
Changes
Steady State
None of the above
A feedback loop in which change in a system is amplified. This is the definition of ___________________.
A positive feedback loop
A negative feedback loop
A steady state
