Weekly blog 10/20/17

Image: 

Image link: https://commons.wikimedia.org/wiki/File:Natural_selection.jpg

Summary: This week we learned about natural selection and we did an experiment. I understand natural selection more clearly now that we did an experiment about it. Natural selection is when nature selects traits that will help a population of animals survive from predators or the environment. An example is if a species is living in the desert and a trait that they get from natural selection is less fur so that the species doesn't get overheated. I also learned that through natural selection a lot of species of animals and insects are able to survive.

SP3: Planning and carrying out investigations
A major practice of scientists is planning and carrying out systematic investigations that require clarifying what counts as data and in experiments identifying variables.

Did you plan and carry out an investigation?

(Mostly when we do a investigation, lab, or experiment)

Yes we did an experiment about natural selection that included spoons, knifes, and forks. The spoons, knifes, and forks represented species of animals. There was also seeds and buttons that represented a food source for the species of animals. The experiment was that 1 person would be a spoon, a knife, or a fork. At the same time everyone would try to get as much 'food'as they possibly could with their 'species'. This experiment helped me understand natural selection by showing how certain traits in species help them get food. Such as the spoon and fork getting the most food because they both have traits to help them pick up more food. The knife however became extinct since it doesn't have a trait that helps it pick up food. This is like how lions have sharp teeth and claws to hunt down prey but giraffes have long necks to get leaves from high trees for food.