Scientific Method
Reliability
Data
Variables and stuff
Life
100
A ______________ is a testable explanation to an observed phenomena.
Hypothesis
100
Sources should be written within the past _____ years to be considered reliable.
TEN
100
By measuring the length of an American alligator, the scientist is gathering what kind of data?
quantitative
100
Observation: I threw a ball and it hit the ground
What is the inference?
Gravity
100
The process by which organisms keep their internal conditions relatively stable is called
homeostasis
200
What factor remains the same during an experiment?
The constant(s)
200
Bias, in scientific experiments, often leads to
incorrect conclusions
200
Valerie designed and conducted an experiment on pothos plants, which are common houseplants. Her hypothesis is that the direction of light will affect the growth pattern of a pothos plant. To test the hypothesis, she sets up two test groups of pothos plants and observes them three weeks later. The table summarizes the test groups and observations. What is Valerie's conclusion?
The direction of light does affect plant growth.
200
Which variable is observed and measured in an experiment?
Dependent variable
200
Why is a virus NOT alive or living? What characteristics of life does it not have? (List at least 2)
reproduction, metabolism, responding to environment
300
After a scientists designs, carries out, and analyzes an experiment, what should they do after to get feedback and establish reliability?
COMMUNICATE
300
What are the benefits of communicating your scientific results to peers or colleagues? List 2.
1. Others can repeat the experiment to confirm your results
2. Spreading scientific knowledge
3. Gaining positive or negative feedback and fixing issues
4. Or something else
300
A researcher studied two groups of fruit flies. Population A was kept in a 0.5 Liter container. Population B was kept in a 1 Liter container. In other respects, both groups were treated similarly. The graph shows the changes to both populations over time. What is the independent variable?
The size of of the containers
300
When can a scientific theory become a law?
NEVER
300
List four characteristics of life.
Reproduction, Heritability, Growth/Development, Respond to Environment, Adaptations, Homeostasis, Metabolism, Cellular Organization
400
List the steps of the scientific method.
(There are 7)
Ask a question, research, form hypothesis, design experiment, analyze results, communicate
400
Who would have the authority to write a scientific paper about the mental health effects COVID-19 had on young children?
Psychiatrists, doctors, mental health therapists, epidemiologists
400
Which of the jars is the control?
Left, meat left in an open jar
400
Which is an example of a testable hypothesis.
A) Increasing the amount of sunlight that a tomato plant receives will increase its height.
B) A plant with many small tomatoes is easier to raise than a plant with a few large tomatoes.
C) Yellow tomatoes are tastier and easier to raise than red tomatoes.
D) Tomatoes should be picked when they are 10 centimeters in diameter.
A) Increasing the amount of sunlight that a tomato plant receives will increase its height.
400
Put the following tiers of life into order from smallest to largest
Organ system, molecule, organelle, organism, cell, organ
Molecule, Organelle, Cell, Organ, Organ system, Organism
500
Describe an experiment that could be done to test what fruit attracts the most fruit flies.
What is your IV, DV, constants, and control?
IV: type of fruit used
DV: amount of flies
Constants: fly species, amount of fruit
500
What are the four concepts to consider when determining reliability?
AACC
authority, accuracy, currency, and coverage
500
Jasmine likes to fish at night off a pier on Lake Okeechobee. She uses a multi-colored flashlight to attract the fish. Jasmine wants to know which color of light will attract the most fish. She sets up 3 different colors of light and 1 regular white light on the area where she fishes. Jasmine hypothesizes that fish will be more attracted to white light instead of any of the color lights. Each night for two weeks at 9pm, she counts the number of fish around the different color of lights.
Which of the following statements correctly describes the independent and dependent variables in this experiment?
IV: different colors of light
DV: number of fish attracted
500
In an experiment investigating the time needed to kill a certain species of bacteria at 100 degrees C, what variables must be controlled?
temperature and species of bacteria only
500
List all eight characteristics of life.
Reproduction, Heritability, Growth/Development, Respond to Environment, Adaptations, Homeostasis, Metabolism, Cellular Organization