Definitions
a method for studying the natural world by gaining knowledge through observations and investigations.
science
A testable prediction that predicts the cause and effect relationship between variables
Hypothosis
"Will adding baking soda to tooth paste whiten your teeth more?"
What is independent variable? What is the dependent variable?
DV- Whiter teeth
The type of graph is used for showing percentages
Pie graph
What is the dependent variable?
What is being measured, the effect
Subjective, based on opinions or assumptions
Inference
The "cause of an experiment"
"Will adding baking soda to tooth paste whiten your teeth more?"
What is the control group and the experimental group?
control- no baking soda
experimental- w baking soda
The best graph to show quantitative vs quantitative data
Line graph
Factors that stay the same in an experiment so that the results are reliable and called...
Constants
Objective, based on information gathered using the five senses
Observation
Quanatative
numerical data
"Will adding baking soda to tooth paste whiten your teeth more?"
Write a Hypothesis
If I add baking soda to my tooth paste then my teeth will be whiter
3 things that every graph must have
title, X axis label, Y axis Label
A rule of principle that describes how something happens in nature
Law
An explanation of why things or events happen based on knowledge gained from many observations and investigations
Theory
Qualatative
Descriptive data
" Can an over inflated football be thrown farther than a football that has the normal amount of air?
Identify
-independent variable
-Dependent variable
-Control AND experimental groups
IV-over inflated football vs regularly inflated football
DV- Distance thrown
-Control: Regular inflated football
Experimental: Over inflated football
What axis does the independent variable go on? How about the dependent variable?
IV- x axis
DV y axis
How could you test this scenario?
"Will hair be softer with mayonnaise or conditioner?
PLEASE WRITE OUT YOUR PROCEDURE!
answers will vary
Control Group
6 steps of the scientific method
1. Ask a question
2.Do research
3.Create a hypothosis
4.Test a hypothosis
5.analyze the data
6. conclude
" Can an over inflated football be thrown farther than a football that has the normal amount of air?
Write a hypothesis
if you inflate a football the normal amount then it will go further
If you are going to look at plant growth over time which graph should you use
Line graph
A team of scientists want to test if watching commercials makes kids eat more snacks when watching TV. They gather two groups of elementary school students. The first group watches 2 hours of TV with no food commercials. The second group watches 2 hours of TV with food commercials every 15 minutes. After the scientists record how many goldfish the students ate during the time period.
List the independent variable, dependent variable, control group, and experimental group.
IV = whether or not kids watch food commercials
DV = amount of goldfish eaten
Control group = group without food commercials
Experimental group = group with food commercials