Quiz Flashcards
What is a hypothesis?
A possible explanation to phenomenon or solution to a problem based on observations made and facts gathered
Generally a hypothesis requires what two qualities to be functional in science?
Testable and falsifiable
What is a scientific theory?
A logical explanation of observed phenomenon and is based on results of many experiments conducted by different scientists
To be useful, scientific theories must be able to do what two things?
Explain known phenomena and predict new events
According to Sagan, what could not have existed in an early Earth atmosphere prior to life?
Oxygen
What is Heike crab an example of?
Artificial selection
In Sagan’s COSMOS he uses the Miller-Urey Experiment to demonstrate what phenomena?
How early molecules formed in the atmosphere
The ozone layer absorbs primarily…
UV radiation
What is an ecosystem referred to as?
The organisms of a particular habitat together with the physical environment in which they lie
A collection of species living in the same area at the same time is termed as what?
A population
The smallest unit of an element that retains the chemical properties characteristic of an element is…
An atom
A community is referred to as…
The assemblage of different populations living together in a defined area
Digestive, endocrine, nervous, and transport systems are used by the human body to maintain a stable internal environments, a process called…
Homeostasis
The process of nutrition involved what processes?
Ingestion and Digestion
Excretion is the process by which…
Organisms remove waste materials, products of chemical reactions, from their bodies
