Identify all the variables (independent, dependent, extraneous, constants, control) in this controlled experiment?
Describe the structure of an isopod. What is an exoskeleton? invertebrate?
Subscribe to:
Post Comments (Atom)
skip to main |
skip to sidebar
Followers
Blog Archive
-
▼
2009
(23)
-
▼
October
(15)
- Measuring Mass
- Yankee Day at MS217
- Measuring with Straws
- Calculating Volume
- The Metric System
- Measurement
- Science Fair Projects
- Virtual Lab: How does the amount of light affect t...
- What type of environment do Red Isopods prefer?
- The Scientific Method
- What is Science?
- Lab Safety
- The Mystery Box
- The Branches of Science
- Mrs. Lindsay's Science Class
-
▼
October
(15)
The independent variable in this controlled experiment are the Isopods. The dependent variable is the wet environment, in our case, the moist paper towel. The extraneous variable is that one of our Isopods died while we were experimenting.The constants were the number of Isopods, the moist and dry paper towel and how much time we cover it. The control was the dry environment. The Isopods are small, they have a shell on their backs, they have lots of tiny feet.They kind of curve in at the end of their sides.
ReplyDeleteAn exoskeleton is a supporting structure or shell of many animals.
An invertebrate is any animals lacking a back bone.
-Shobha Persaud 721
Shoba,
ReplyDeleteIs the independent variable of this experiment the isopods? Remember the independent variable (manipulated variable) is the part of the experiment that is being tested and that YOU are able to change. The dependent variable (responding variable)is the part of the experiment that is being measured. What did you measure in this experiment? Constants are factors that remain the same in the experiment.
Yes, the loss of an isopod is an extraneous variable. It was unanticipated and unwanted and could of negatively affected your results if it was not noticed.
(independent, dependent, extraneous, constants, control)
ReplyDeleteindependent variable is the isopods and what environment they prefer.
dependent variable is how many isopods prefer moist or dry
constants is the dry and moist side and the number of isopods
control is the dry environment
The independent variable is the environment the isopods prefer. The dependent variable is the number of isopods in the dry environment or moist environment. My group didn't experience any extraneous variables, but one group had a dead isopod, while another group had the birth of an isopod. The constants were the time limit,(in some groups) the number of isopods, and the dry and moist paper towel.
ReplyDelete(I forgot the structure of the isopod.)
ReplyDeleteAn exoskeleton is an eternal skeleton that supports and protects an animal's body. An invertebrate is an animal without a backbone.
Yusuf and Shobha- The number of isopods in some groups weren't constants because one group had a dead isopod while another group had a baby isopod.
ReplyDeleteYusuf- You forgot to describe the structure.
Mrs. Lindsay- You spelled Shobha's name wrong.
Independent Variable: Isopod's habitat preference.
ReplyDeleteDependent Variable: Number of Isopods
Extraneous Variable: In our group, we had an isopod pass away so the results were out of 8 instead of out of 9.
Constants: moist/dry paper towels, time given for the isopods to spread out.
Control: There wasn't one in this lab because the two habitats were being compared to each other.
Structure of an Isopod: Isopods are small creatures that have exoskeletons. They are often compared to a crab.
An exoskeleton is the hard outer layer or shell that animals have for protection.
An invertebrate is a living thing that has to spine or vertebrae.
The independant variable in this experiment is the environment that red isopods prefer. The dependant variable is the number of isopods on the dry paper towel and the moist paper towel. The extranoues variable in certain groups was the amount of isopods. The control was the dry paper twoel, the wet paper towel and the time limit.
ReplyDeleteI disagree with Yusuf, Shoba, And Rahul because the independent variable is the wet environment and the dependent variable was the number of isopods who prefer moist envirounment.The control was the dry environment. My group didn't have any extraneous variable, but two groups did, one group's isopod died and the other group's isopod was given birth. The constants were the number of Isopods all together, the two environments, and the amount of time the bin was covered. The isopod are small, they come from crab family. Invertbrates are animals without backbones.An exoseketon is skeleton outside of some animals that protect and support the animal's body.
ReplyDeletemarcien- hey! you guys did them isopods things cool well i dont know what to write about..but i still get extra credit right hehe
ReplyDeleteThe dependent varible is the isopods
ReplyDeleteThe constant is the bin, number of isopods(ect.)
The extraneous varible is if one of the ispods die or one isopods born.
- Mosammed Akter 801
Hi Marcien,
ReplyDeleteIt is good to hear from you! I hope all is well in HS. Keep checking our blog, you might learn something new :0)
In this experiment, the independent variable was the moist environment, the dependent variable was how many Isopods went to the environment, the control was the amount of Isopods that went to the dry side, the constants were the amount of time we left them to choose their sides (one minute), the amount of Isopods initially used, and the extraneous variable was one of the Isopods on my group died, while in another group, an Isopod was born. Isopods are crustaceans, which means they are part of the crab family. They have an exoskeleton (that means their skeleton is on the outside of their body). Invertebrates are animals that have no vertebrae, or spine.
ReplyDeleteThe independent varible in this experiment is the environment the isopods prefer. The dependent variable was how many Isopods were on the environmets after the minute was up. The constants were the time they had to choose the sides which was one minute, and the amount of Isopods used. Exoskelton means they have their skelton on the outside of their body. Invertbrates are animals that do not have no spine.
ReplyDeleteNaiomi Samlall