a type of investigation that involves trying to keep all conditions the same except for the variable being tested; involves testing a hypothesis, measuring and collecting data, and making a conclusion
What is a controlled experiment?
100
when the same scientist does their own experiment again or conducts multiple trials in the same location
What is repetition?
100
The thinnest layer of the Earth
What is the crust?
100
a landform made by the erosion and deposition of sand by wind
What is a sand dune?
100
the name for molten rock
What is magma?
200
the variable that is kept constant and stays the same throughout an experiment
What is a control variable?
200
when a scientist copies another person's experiment in order to check for errors and increase the reliability of the experiment's results
What is replication?
200
the most dense layer made of solid metal
What is the inner core?
200
a landform made by the deposition of sediment at the mouth of a river
What is a delta?
200
rock type made from heat and pressure
What is metamorphic rock?
300
the variable that is changed on purpose by the scientist; usually what is made different in an experiment
What is an independent variable?
300
a representation that makes something easier to understand
What is a model?
300
three things that increase the deeper you go beneath Earth
What are temperature, density, and pressure?
300
the two agents of both weathering and erosion
What is wind and water?
300
rock type made by melting and cooling?
What is igneous rock?
400
the part of a line graph where the independent variable is labeled
What is the x-axis?
400
A statement that describes what scientists expect to happen every time for one specific thing that is observable
What is a scientific law?
400
the thickest layer of the Earth that also has partially molten rock; convection occurs here when magma rises and sinks
What is the mantle?
400
the breakdown of rock into smaller pieces through some type of reaction; acid rain is an example
What is chemical weathering?
400
rock type made from compaction and cementation
What is sedimentary rock?
500
the variable known as the "outcome" variable; it changes due to the change in another variable and is usually what is measured or observed in an experiment
What is a dependent variable?
500
scientific experiments, observational research, and opinion-based research are three different examples of this
What is a scientific investigation?
500
liquid metal layer of the Earth where convection currents cause the magnetic field
What is the outer core?
500
when water washes away small pieces of soil to a new location; this process is slowed down or prevented by plant roots
What is soil erosion?
500
a rigid layer of rock made up of the crust and upper mantle combined; contains tectonic plates