Variables
This is the factor that the scientist changes on purpose during an experiment.
Independent Variable
This type of data uses numbers and measurements.
Quantitative Data
This is an educated, testable prediction about what will happen.
Hypothesis
The same scientist performs multiple trials during one investigation. What is this called?
Repetition
This is a rule that describes a pattern in nature that always happens under certain conditions.
Scientific Law
This is the factor that is measured because it changes in response to the independent variable.
Dependent Variable
This type of data describes things such as color, smell, texture, and appearance.
Qualitative Data
This is information collected using your senses or scientific tools.
Observation
Another scientist repeats an entire experiment to see if they get the same results. What is this called?
Replication
This is a well-tested explanation of why something happens in nature.
Scientific Theory
These are the factors that scientists keep the same throughout an experiment.
Constants / Control Variables
A student records that a flower is purple, has smooth petals, and smells sweet. What type of data did the student collect?
Qualitative Data
This is a scientific test used to answer a question or test a hypothesis.
Experiment
A class tests each fertilizer sample three times during its investigation. Is this repetition or replication?
Repetition
Gravity describes a consistent pattern of how objects fall toward Earth. According to our vocabulary, is this a scientific law or theory?
Scientific Law
A scientist tests whether different amounts of fertilizer affect plant growth. She changes the amount of fertilizer given to each plant. What is the independent variable?
Amount of fertilizer
A student records that a plant is 18 centimeters tall and has 12 leaves. What type of data is this?
Quantitative Data
Before beginning an investigation, Maya writes: “If plants receive more sunlight, then they will grow taller.” What scientific term describes her statement?
Hypothesis
Students at RAA conduct an experiment. Later, students at another school perform the same experiment and compare their results. What occurred?
Replication
Plate tectonics is supported by years of scientific evidence and explains why Earth's plates move. Is it a scientific law or scientific theory?
Scientific Theory
Students test whether different amounts of sunlight affect bean plant growth. Every plant receives the same soil and water. After two weeks, students measure plant height. Identify the independent variable, dependent variable, and TWO constants.
IV: Amount of sunlight; DV: Plant height; Constants: Amount of water and type/amount of soil
A student records: “The plant is 24 cm tall, has 8 leaves, and the leaves are pale green.” Identify the quantitative AND qualitative data.
Quantitative: 24 cm tall and 8 leaves. Qualitative: Pale green leaves.
Jordan notices that plants near the classroom window are leaning toward the sunlight. Is this an observation or hypothesis, and explain why.
Observation, because Jordan is recording/noticing something that actually occurred rather than predicting what will happen.
Group A performs the same investigation five times. Then Group B performs Group A's entire investigation. Identify what Group A did AND what Group B did.
Group A: Repetition. Group B: Replication.
Complete BOTH statements: A scientific ______ describes a pattern that occurs in nature, while a scientific ______ provides a well-tested explanation of why something happens.
Law; Theory