Table of Contents
- 1 What is the scientific idea that has survived many experiments and observations without ever being proven false?
- 2 What type of symmetry does an organism that can be cut into equal halves in only one direction have?
- 3 What is spherical symmetry in biology?
- 4 What are scientific ideas?
- 5 What is Cephalization associated with?
- 6 What is the purpose of testing scientific ideas?
- 7 Which is the best definition of a scientific experiment?
- 8 Which is a logical step in scientific testing?
What is the scientific idea that has survived many experiments and observations without ever being proven false?
A scientific hypothesis that survives extensive experimental testing without being shown to be false becomes a scientific theory. Accepted scientific theories also produce test- able predictions that are successful.
What type of symmetry does an organism that can be cut into equal halves in only one direction have?
Biradial symmetry Unlike radially symmetrical organisms which can be divided equally along many planes, biradial organisms can only be cut equally along two planes. This could represent an intermediate stage in the evolution of bilateral symmetry from a radially symmetric ancestor.
What is scientific theory example?
A scientific theory is a broad explanation that is widely accepted because it is supported by a great deal of evidence. Examples of theories in physical science include Einstein’s theory of gravity, the kinetic theory of matter and the wave-particle theory of light.
What is spherical symmetry in biology?
For an organism to exhibit spherical symmetry, its body must be shaped like a sphere, and all parts must be arranged or radiate equally around a center point. Roughly speaking, you can think of the sun as having spherical symmetry.
What are scientific ideas?
A scientific idea is an explanation of how something works, or the truth about some aspect of the world, that was figured out using the scientific process. Science is how we make sense of the world by collecting data and doing experiments. Scientific ideas change over time as our evidence improves.
What is called radial symmetry in biology?
Radial symmetry is the arrangement of body parts around a central axis, like rays on a sun or pieces in a pie. Radially symmetrical animals have top and bottom surfaces, but no left and right sides, or front and back. Radial symmetry: Some organisms, like sea anemones (phylum Cnidaria), have radial symmetry.
What is Cephalization associated with?
In zoology, cephalization is the evolutionary trend toward concentrating nervous tissue, the mouth, and sense organs toward the front end of an animal. Cephalization is associated with bilateral symmetry and movement with the head facing forward.
What is the purpose of testing scientific ideas?
Any aspect of the natural world could be explained in many different ways. It is the job of science to collect all those plausible explanations and to use scientific testing to filter through them, retaining ideas that are supported by the evidence and discarding the others.
Which is the best description of the scientific method?
(Image credit: LANL) Science is a systematic and logical approach to discovering how things in the universe work. It is also the body of knowledge accumulated through the discoveries about all the things in the universe.
Which is the best definition of a scientific experiment?
Scientific experiments involve variables, controls, hypotheses, and a host of other concepts and terms that might be confusing. Here is a glossary of important science experiment terms and definitions: Central Limit Theorem: States that with a large enough sample, the sample mean will be normally distributed.
Which is a logical step in scientific testing?
You can think of scientific testing as occurring in two logical steps: (1) if the idea is correct, what would we expect to see, and (2) does that expectation match what we actually observe? Ideas are supported when actual observations (i.e., results) match expected observations and are contradicted when they do not match.