My online science portfolio by Genna Chevarella https://padlet.com/chevarella34/bqjb9d6wqcg Stuff I have learned in science en-us 2017-06-05 15:38:14 UTC 2024-12-14 04:36:36 UTC hello@padlet.com WHat is an observation chevarella34 https://padlet.com/chevarella34/bqjb9d6wqcg/wish/175233341 Observation is the active acquisition of information from a primary source. In living beings, observation employs the senses. In science, observation can also involve the recording of data via the use of instruments. The term may also refer to any data collected during the scientific activity.]]> 2017-06-05 15:41:19 UTC https://padlet.com/chevarella34/bqjb9d6wqcg/wish/175233341 Observation v Inference chevarella34 https://padlet.com/chevarella34/bqjb9d6wqcg/wish/175233756 2017-06-05 15:44:10 UTC https://padlet.com/chevarella34/bqjb9d6wqcg/wish/175233756 chevarella34 https://padlet.com/chevarella34/bqjb9d6wqcg/wish/175234198 2017-06-05 15:46:40 UTC https://padlet.com/chevarella34/bqjb9d6wqcg/wish/175234198 experiments chevarella34 https://padlet.com/chevarella34/bqjb9d6wqcg/wish/175234829 The control group is defined as the group in an experiment or study that does not receive treatment by the researchers and is then used as a benchmark to measure how the other tested subjects do.

in an experiment or clinical  a group of subjects who are exposed to the variable under study: a lower infection rate in the experimental group that received the vaccine. ... experimental group group n. Agroup of subjects that are exposed to the variable of a control experiment.

A variable is any factor, trait, or condition that can exist in differing amounts or types. An experiment usually has three kinds of variables: independent, dependent, and controlled. The independent variable is the one that is changed by the scientist.

A dependent variable is the variable being tested in a scientific experiment. The dependent variable is 'dependent' on the independent variable. As the experimenter changes the independent variable, the change in the dependent variable is observed and recorded.


]]> 2017-06-05 15:49:53 UTC https://padlet.com/chevarella34/bqjb9d6wqcg/wish/175234829 chevarella34 https://padlet.com/chevarella34/bqjb9d6wqcg/wish/175236645 2017-06-05 16:00:59 UTC https://padlet.com/chevarella34/bqjb9d6wqcg/wish/175236645 chevarella34 https://padlet.com/chevarella34/bqjb9d6wqcg/wish/175237711 2017-06-05 16:04:56 UTC https://padlet.com/chevarella34/bqjb9d6wqcg/wish/175237711 Rock that has formed through the deposition and solidification of sediment, especially sediment transported by water (rivers, lakes, and oceans), ice ( glaciers ), and wind. Sedimentary rocks are often deposited in layers, and frequently contain fossils. Note : Limestone and shale are common sedimentary rocks. chevarella34 https://padlet.com/chevarella34/bqjb9d6wqcg/wish/175238120 Igneous rock (derived from the Latin word ignismeaning fire), or magmatic rock, is one of the three main rock types, the others being sedimentary and metamorphic. Igneous rock is formed through the cooling and solidification of magma or lava.metamorphic rock definition. Rock that was once one form of rock but has changed to another under the influence of heat, pressure, or some other agent without passing through a liquid phase. Note :Examples are marble, which can be formed from limestone, and slate, which is formed from shale.]]> 2017-06-05 16:07:19 UTC https://padlet.com/chevarella34/bqjb9d6wqcg/wish/175238120 cell membrane chevarella34 https://padlet.com/chevarella34/bqjb9d6wqcg/wish/175434297
  • the semipermeable membrane surrounding the cytoplasm of a cell.

    • ]]>     2017-06-06 17:24:44 UTC https://padlet.com/chevarella34/bqjb9d6wqcg/wish/175434297     eukaryotic cell vs prokaryotic cell chevarella34 https://padlet.com/chevarella34/bqjb9d6wqcg/wish/175435672 Eukaryotic cells contain membrane-bound organelles, such as the nucleus, while prokaryotic cells do not. Differences in cellular structure of prokaryotes andeukaryotes include the presence of mitochondria and chloroplasts, the cell wall, and the structure of chromosomal DNA.]]> 2017-06-06 17:32:38 UTC https://padlet.com/chevarella34/bqjb9d6wqcg/wish/175435672 organelles chevarella34 https://padlet.com/chevarella34/bqjb9d6wqcg/wish/175436130
  • any of a number of organized or specialized structures within a living cell.

    • ]]>     2017-06-06 17:35:15 UTC https://padlet.com/chevarella34/bqjb9d6wqcg/wish/175436130     Plant vs Animal Cell chevarella34 https://padlet.com/chevarella34/bqjb9d6wqcg/wish/175436704 Structurally, plant and animal cells are very similar because they are both eukaryotic cells.Beyond size, the main structural differences between plant and animal cells lie in a few additional structures found in plant cells. These structures include: chloroplasts, the cell wall, and vacuoles.]]> 2017-06-06 17:38:54 UTC https://padlet.com/chevarella34/bqjb9d6wqcg/wish/175436704 Cell Theory chevarella34 https://padlet.com/chevarella34/bqjb9d6wqcg/wish/175437268 In biology, cell theory is a scientific theory which describes the properties of cells. These cells are the basic unit of structure in all organisms and also the basic unit of reproduction.


    ]]>     2017-06-06 17:42:35 UTC https://padlet.com/chevarella34/bqjb9d6wqcg/wish/175437268     A food web consists of many food chains. A food chain only follows just one path as animals find food. eg: A hawk eats a snake, which has eaten a frog, which has eaten a grasshopper, which has eaten grass. A food web shows the many different paths plants and animals are connected. chevarella34 https://padlet.com/chevarella34/bqjb9d6wqcg/wish/175437805 2017-06-06 17:45:06 UTC https://padlet.com/chevarella34/bqjb9d6wqcg/wish/175437805 primary vs secondary succession chevarella34 https://padlet.com/chevarella34/bqjb9d6wqcg/wish/175438212 Primary succession begins in barren areas, such as on bare rock exposed by a retreating glacier. The first inhabitants are lichens or plants—those that can survive in such an environment. Over hundreds of years these “pioneer species” convert the rock into soil that can support simple plants such as grasses. These grasses further modify the soil, which is then colonized by other types of plants. Each successive stage modifies the habitat by altering the amount of shade and the composition of the soil. The final stage of succession is a climax community, which is a very stable stage that can endure for hundreds of years.]]> 2017-06-06 17:47:16 UTC https://padlet.com/chevarella34/bqjb9d6wqcg/wish/175438212 Atom chevarella34 https://padlet.com/chevarella34/bqjb9d6wqcg/wish/175438928 The smallest component of an element having the chemical properties of the element, consisting of a nucleus containing combinations of neutrons and protons and one or more electrons bound to the nucleus by electrical attraction; the number of protons determines the identity of the element.

    ]]>     2017-06-06 17:50:56 UTC https://padlet.com/chevarella34/bqjb9d6wqcg/wish/175438928     chevarella34 https://padlet.com/chevarella34/bqjb9d6wqcg/wish/175440530 2017-06-06 18:00:28 UTC https://padlet.com/chevarella34/bqjb9d6wqcg/wish/175440530 observation v infrences chevarella34 https://padlet.com/chevarella34/bqjb9d6wqcg/wish/175554087 An observation is defined as using one or more of the five senses to gather information, and may include the use of equipment. An inference is defined as the development of ideas based on observations. A prediction is defined as the use of knowledge to identify and explain observations, or changes, in advance.]]> 2017-06-07 12:57:15 UTC https://padlet.com/chevarella34/bqjb9d6wqcg/wish/175554087