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Science Vocab
chapter 2 lesson 3 and scientific method
Term | Definition |
---|---|
flatworm | a worm with a flattened body and one body opening |
roundworm | a worm that has a round body and two body openings |
segmented worms | a worm that has a body that is divided into sections |
scavengers | animals that feeds on dead and decaying things |
worms | an invertebrate split into 3 groups |
planaria | ex. of a scavenger flatworm |
parasite | a living thing that lives on another living thing and harms the living thing which it feeds |
tapeworm | ex. of a parasitic flatworm |
hookworm | ex. of a parasitic roundworm |
leech | ex. of a parasitic segmented worm |
earthworm | ex. of a scavenger segmented worm |
coelum | protects internal organs of a segmented worm |
setae | extra little hairs on segmented worms |
problem | a question or problem you can research and test |
research | background info about a scientific problem |
hypothesis | educated guess based on research |
procedure | steps you will follow to test a scientific problem |
materials | list of everything you need to run the experiment |
experiment | the actual testing of the problem |
data | Info gathered during the experiment |
observations | any changes you notice during the experiment |
conclusion | statements about the results of the experiments |
theory | final factual statement about the results |
type of body system in an earthworm that carries the blood | circulatory system |
where a tapeworm lives once it enters the body | intestines |
hairlike structures on an earthworm | setae |
body system in an earthworm that contains the crop, gizzard, and intestines | digestive system |
some earthworms can cause what? | disease |
what do earthworms breath through? | their skin |
how worms are classified into groups by what? | their shape |
Number of body openings in a flatworm | one |
number of body openings in a roundworm | two |
crop | where food is stored |
gizzard | grinds food |
eyespots | nerve organs on a flatworm's triangle- shaped head for detecting and reacting to light |
bilateral symmetry | means the worm has matching left and right sides when you divide it half lengthwise |
regeneration | ability to regrow missing body parts |
annelid | means "little rings" |
cilia | tiny hairs that cover the bodies of flatworms |
the 10 steps in the scientific method | problem, research, hypothesis, procedure, materials, experiment, data, observation, conclusion, theory |
earthworms lack a what? | respiratory system |