LUOA's 8th Grade Semester 1 5.18.F - Test: Semester Exam 2023 Questions and Answers

LUOA's 8th Grade Semester 1 5.18.F - Test: Semester Exam 2023 Questions and Answers You are expected to complete approximately ___________________ minutes of school work EVERY DAY, Monday-Friday, in each of your classes. 45 A(n) __________ is a logical interpretation based on observations and previous knowledge. inference What is a theory? A possible explanation of a general principle offered to explain observed facts. To take back something someone stated publicly is to _________ their statement. recant Which experiment of Galileo's was performed on the moon? dropping a feather and a hammer The factors that can change during an experiment are referred to as _________. variables How many independent variables (IV) should you have in an experiment? only one Grandma Hippity Hop is worried about the ice that will be forming on her sidewalk this winter. She doesn't have money to waste on sidewalk salt that is ineffective, so Brenda decides to do some testing for her. What should her control be to test this? same size of ice cubes Convert this number from standard form into scientific notation: 18,900,000 1.89 x 107 Convert this number from scientific notation into standard form: 2.987 x 107 29,870,000 Convert this number from standard form into scientific notation: 0.00045 4.5 x 10-4 ______________ is the extent a measurement moves toward a known value. Accuracy Convert this number from scientific notation into standard form: 9.8 x 10-3 0.0098 Julie is having a swimming party and needs to replace the water that has evaporated from her pool. What metric measurement will she use? liters To convert a smaller metric measurement to a larger one, you move the decimal point to the ________. left Which is the proper way to cite a book using MLA format? Author's last name, first name. Title of book. City of publication: Publisher, year of publication. Medium of publication. How much time are you expected to spend on this class? 45 minutes a day, 5 days a week What should you do if you are going to be away for a couple of days? work ahead and finish assignments ahead of time The metric system of measuring is always used by? Scientists Who was Aristotle's teacher? PLato What greatly affects how scientists (and you) look and interpret evidence? Their worldview. In studying science and the world around us you will find that there are many things that you cannot _____________________ with your senses and test by _____________________________ . observe...experimentation As you work through the scientific method and come to the conclusion that your hypothesis is false, what should you do next? Report your results and try again. with a new hypothesis hypothesis A possible explanation for a set of observations observation use of our five senses to gather information (data) scientific inquiry The process of continuous discovery and building of knowledge in the World of science interpret to understand according to an individual's beliefs assume to suppose as a fact How many independent variables (IV) should you have in an experimen only one Jordan wants to see if earthworms prefer rough or smooth terrain to crawl through. What will be his independent variable? This is what he will change in his experiment. change the terrain What is the controlled variable (control) in an experiment? the parts of the experiment which are not changed in any way The one thing in an experiment that you are trying to measure is called the ________. dependent variable The factor in an experiment that you are trying to measure is referred to as the _____. dependent variable Experiment Scenario: Amelia loves to play golf but hates it when her golf balls go into the water. Some brands seem to soak up so much water that they never quite make it to the green again. She has decided to test her dad's three favorite brands