Experimental Design
In an experiment, which variable is the one that you as the scientist get to manipulate?
Independent variable.
What is a commonly known example of a renewable resource?
What is sunlight or solar energy?
Pollution from a specific identifiable source, such as a factory discharge pipe
point-source pollution
What is the difference between Global Warming and Climate Change?
global warming: describes an average temperature increase of the earth over time.
Climate Change: Describes how weather patterns will be affected around the globe
Name one reason why protecting biodiversity is important.
Healthy ecosystems
Protect genetic diversity
Undiscovered foods, medicines and other resources
Protect soil & clean water
A biology student wanted to study the effect of fertilizer on the growth of tomato plants. He placed four of the same type of tomato plants into separate containers, each containing the same amount of soil. Each pot received a different watering solution, containing varying amounts of fertilizer.
What is the dependent variable?
The growth of tomato plants.
Which fossil fuel is formed from the remains of ancient marine organisms?
What is petroleum or crude oil?
Pollution from diffuse sources, such as agricultural runoff
non-point source pollution
Which of these countries emits the most carbon dioxide?
A. China
B. USA
C. UK
D. Russia
A. China
Do developed or developing countries have a larger environmental impact?
Developed countries
A biology student wanted to study the effect of fertilizer on the growth of tomato plants. He placed four of the same type of tomato plants into separate containers, each containing the same amount of soil. Each pot received a different watering solution, containing varying amounts of fertilizer.
What are the factors in italics referred to as?
Constants
Which resource(s) are finite and we are running out of quickly?
Nonrenewable resources.
It can lead to respiratory and cardiovascular diseases, allergies, and lung damage in humans. It also contributes to climate change, smog formation, acid rain, and the deterioration of ecosystems.
What is air pollution?
How are Greenhouse gasses harming our environment?
Less heat is able to escape causing the Earth to warm up.
Due to human impact on the planet, certain species are becoming _______ or unfortunately even _______. ex: polar bears
endangered or extinct.
Imagine that you and your team of scientists are studying the affects of microplastics on the overall health of certain fish in the local river. What would be your experimental group? What would be your control group?
Experimental group: Fish exposed to microplastics.
Control group: Fish not exposed to microplastics/clean freshwater.
True or false: Resources have nothing to do with our daily lives
False
Common sources and causes of this type of pollution include improper waste disposal (e.g., landfilling, open burning), industrial activities, mining operations, agricultural practices (e.g., excessive use of pesticides and fertilizers), deforestation, and urbanization.
What is land pollution?
Which of the following are consequences associated with climate change?
The ice sheets are declining, glaciers are in retreat globally, and our oceans are more acidic than ever.
Surface temperatures are setting new heat records about each year.
More extreme weather like droughts, heat waves, and hurricanes
Global sea levels are rising at an alarmingly fast rate — 17 centimeters (6.7 inches) in the last century alone and going higher
All of the above
All of the above
Animal that lives in the ocean, considered one the most biodiverse ecosystems, suffering from extreme environmental stress and bleaching.
Coral Reef
A science class wanted to study the effect of different materials on the melting rate of ice. They placed pieces of ice, each with a mass of 10g, onto trays. Group 1 was covered in plastic, group 2 was covered in paper, group 3 was covered in aluminum, and group 4 remained uncovered.
Each piece of ice was allowed to melt for 15 minutes. Then final mass of the ice, minus the melted water, was recorded at the end of the experiment.
Identify all parts of this experimental design: Independent vs dependent variables; experimental group vs control group; constants.
independent variable: different materials used
dependent variable: rate of ice melting
experimental group: groups 1 through 3 (given a type of material)
control group: group 4 (not covered)
constants: amount of ice, tray, 15 minutes, final mass recorded at the end
Name 4 non-renewable resources
oil/petroleum, coal, natural gas, nuclear energy
Strategies to prevent and reduce water pollution include...?
implementing proper wastewater treatment and management, promoting sustainable agriculture practices, reducing chemical use, improving waste disposal systems, and raising public awareness about water conservation and protection.
True of False: Climate Change is easier to predict than Weather Change.
True!
What are the 5 major impacts humans have on the environment?
overpopulation, pollution, burning fossil fuels, and deforestation.