Nine Week Study Guide

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# Nine Week Study Guide - PowerPoint PPT Presentation

Nine Week Study Guide. Definitions. Hypothesis- An educated guess to a scientific problem. I.V.- The variable that changes in an experiment. D.V.- The variable that is being tested or measured in an experiment. Definitions.

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### Nine Week Study Guide

Definitions
• Hypothesis- An educated guess to a scientific problem.
• I.V.- The variable that changes in an experiment.
• D.V.- The variable that is being tested or measured in an experiment.
Definitions
• Control Group- The group in an experiment that is treated normally. EX: Giving a plant water versus giving a plant Dr. Pepper.
• Experimental group- The group in an experiment that is being experimented on.

Ex: Giving a plant Dr. Pepper versus giving it water.

Definitions
• Constant- Things in an experiment that remains the same between the control group and experimental group.
• Control- Factors in an experiment that the Independent Variable compares to.
Scenario 1
• Title: Answers can vary; The effects of Starbucks Coffee on Cancer Tumors.
• Hypothesis: Starbucks Coffee does or does not reduce the size of cancer tumors.
• I.V.- Starbucks Coffee
• D.V.- Size of the Tumor
• Constants: Amount of days(6 Months) , X-ray
Scenario 2
• Title: The effects of Breakfast on Thinking Ability
• Hypothesis: Breakfast does and does not play an important role in one’s ability to think.
• I.V.- Not having breakfast
• D.V.- How well you are able to process information (thinking ability).
• Constants- SAT-10, Same Instructor.
1.
• Matter is anything that has mass and takes up space.
2.
• Mass is measured in grams using a Triple Beam Balance.
3.
• Milk Spoiling- C
• Silver Tarnishing- C
• Ice Melting- P
• Evaporation- P
• Leaf changes color- P
• Water purified through distillation- P
4.
• Density= Mass/ Volume
• Mass Divided By Volume
• 52g /73.5ml = 0.707= 0.71g/ml
5.
• Concrete- M; Hetero.
• Wood- M; Hetero.
• Table Salt- P.S
• Milk- M; Homo.
• Sodium- P.S.
• Pure Air- M;Homo.
5.
• Blood- M; Hetero
• Soil- M; Hetero.
• Paint- M; Hetero
• Oxygen- P.S.
• Nail Polish- M; Hetero
6.
• Gases have an indefinite shape and an indefinite volume.
7.
• Liquids have an indefinite shape and a definite volume.
8.
• Solid particles stay in place.
• Liquid particles move/slide past each other.