Vocabulary
the process of obtaining information by using the senses
What is an observation?
Two basic types of investigation
What is experimentation and observation?
True or False: A reliable source is your mom's best friend's neighbor's Facebook post about evolution.
FALSE
Medical students use a three-dimensional reproduction of a human skeleton to learn about bones
What is a model?
an organized procedure to study something under controlled conditions.
What is experiment?
The step in an investigation in which a scientist may be conducting an experiment
What is the procedure?
You see an article in a fashion magazine about viruses that was written by a high school fashion club.
"studying the effect of temperature on bacterial reproduction rates" Contains what two parts of a scientific investigation?
What is an independent and dependent variable?
a testable idea or explanation that leads to a scientific observation
What is a hypothesis?
Defining a problem for investigation
What is the first step in a scientific investigation?
True or False: TikTok and Instagram reels are the most accurate way to obtain scientific knowledge
FALSE
Malik investigates the force required to pull an object across a table and records his data,
Mass of object (kg) Force required (N)
1 0.20
2 0.41
4 0.80
8 ?
Based on the data, what force is required to pull the 8-N object?
What is approximately 1.60 N?
the factor that is deliberately changed in an investigation
What is an independent variable?
The term for when a scientist who conducted the original investigation conducts the same investigation again
What is repetition?
the evaluation of work by one or more people with similar competencies as the producers of the work. This may require a scientist to defend and repeat their work and for other scientists to replicate their work
What is Peer-review?
A science class was investigating how far a ball could be thrown. The table below shows their results.
Trial Distance traveled by ball (m)
1 10.2
2 10.3
3 10.5
4 5.0
Based on the evidence, what claim tells how they can improve the accuracy of the investigation?
Average the Data
the factor that changes as a result of manipulation of another variable
What is dependent variable?
The process in which a scientist conducts the same investigation as another scientist.
What is replication?
the most reliable source for scientific publications
What are peer-reviewed journals?
A class is studying tide pools and starfish. They made the following claim: If the water temperature in a tide pool increases, then the starfish population decreases.
Then they recorded the following data:
Starfish Population of Tide Pools
Water Temperature (º C) Population
10 37
12 44
16 64
20 48
Compare the evidence from the experiment with the class’s claim. What should they do next?
What is Change their hypothesis?