Variables
Graphs & Data
Experimental Design
Theory vs Law
Vocab
100
How many independent variables should be in an experiment?
1
100
Which graph should be used to compare categories?
Bar Graph
100
Why is replication important?
To make sure other scientists can get the same results. It makes your data reliable.
100
Which one describes and which one explains?
Law - Describes
Theory - Explains
100
State of matter where sound travels the fastest.
Solid
200
Poppy wanted to see if watering plants with salt water would make them grow faster. She gave salt water to one plant and regular water to another. Which is the control group?
Regular Water Plants
200
What is the dependent variable?
Resting Heart Rate
200
Why does science change over time?
New discoveries due to better technology
200
Can a theory become a law?
NOOOOOOOOOOO!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
200
A method of gathering data without any variables
Investigation
300
Poppy wanted to see if watering plants with salt water would make them grow faster. Identify 2 control variables.
Soil, Sunlight, Plant Type, Amount of Salt, Type of Salt
300
What is the independent variable?
Salt Concentration
300
Poppy wanted to see if watering plants with salt water would make them grow faster. Make a hypothesis for this experiment.
If I give plants salt water then they will grow faster.
300
Earthquakes are caused by the tectonic plates moving. Theory or Law and explain why.
Theory because it explains why something happens
300
The kind of evidence scientist gather from an investigation or experiment
Empirical Evidence
400
Experiment: The bigger the fruit the more the birds will eat.
I set out a blueberry, strawberry, and an apple for the birds.
What is my independent and dependent variable?
Independent: Fruit size
Dependent: How much the birds eat
400
What does the data tell you?
The greater temperature the higher bounce
400
After a scientist does an experiment once they have to do it again. What is that called and why do they do experiments multiple times?
Repetition. It is needed to make sure the results are valid and proven true.
400
Which is more frequently changed due to new evidence?
Theory
400
Used to help scientist analyze things they cannot directly see like atoms or the solar system
Scientific Models
500
I will jump higher if I wear lighter clothes.
What is the independent, dependent, and control variables?
Independent: Lighter clothes
Dependent: Jump Height
Controls: Jump type, location, time, etc
500
My hypothesis was that the higher soil temperature will lead to a greater germination rate. If my hypothesis supported by the data? Explain a lil
No. The highest temperature does not have the highest rate
500
How do you retest scientific investigations?
Through replication and repetition
500
What is something theories and laws have in common?
They both are:
Supported by Evidence
Used to make predictions
Widely Accepted
500
A type of observation where you gather data on characteristics. Example: This chair is blue, the wall is white
Qualitative Observation