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Which of the following is the best description of a control for an experiment?
The control group is matched with the experimental group except for the one experimental variable.
temperature of the air increases
the wavelength increases from bottom to top
steel
to ensure that the results obtained are due to a difference in only one variable
changes in response to the change the scientists makes to the independent variable
black
It generates seismic waves that spread out in all directions around Earth.
Tectonic activity causes potential energy to build up in the crust. An earthquake occurs when this potential energy is released within the crust. Which statement best describes what happens when the energy is released?
The control group is matched with the experimental group except for the one experimental variable.
temperature of the air increases
the wavelength increases from bottom to top
steel
to ensure that the results obtained are due to a difference in only one variable
changes in response to the change the scientists makes to the independent variable
black
It generates seismic waves that spread out in all directions around Earth.
What is the primary reason for including a control in the design of an experiment?
The control group is matched with the experimental group except for the one experimental variable.
temperature of the air increases
the wavelength increases from bottom to top
steel
to ensure that the results obtained are due to a difference in only one variable
changes in response to the change the scientists makes to the independent variable
black
It generates seismic waves that spread out in all directions around Earth.
An apple appears red when struck by white light. This appearance is because the red light is reflected and the other colors are absorbed. What color will this apple appear to be when struck by blue light?
The control group is matched with the experimental group except for the one experimental variable.
temperature of the air increases
the wavelength increases from bottom to top
steel
to ensure that the results obtained are due to a difference in only one variable
changes in response to the change the scientists makes to the independent variable
black
It generates seismic waves that spread out in all directions around Earth.
The speed of sound through air increases as the:
The control group is matched with the experimental group except for the one experimental variable.
temperature of the air increases
the wavelength increases from bottom to top
steel
to ensure that the results obtained are due to a difference in only one variable
changes in response to the change the scientists makes to the independent variable
black
It generates seismic waves that spread out in all directions around Earth.
Through which medium does sound travel the fastest?
The control group is matched with the experimental group except for the one experimental variable.
temperature of the air increases
the wavelength increases from bottom to top
steel
to ensure that the results obtained are due to a difference in only one variable
changes in response to the change the scientists makes to the independent variable
black
It generates seismic waves that spread out in all directions around Earth.
Which describes what happens when sound waves become louder?
The control group is matched with the experimental group except for the one experimental variable.
temperature of the air increases
the wavelength increases from bottom to top
steel
to ensure that the results obtained are due to a difference in only one variable
changes in response to the change the scientists makes to the independent variable
black
It generates seismic waves that spread out in all directions around Earth.
The dependent variable in an experiment
The control group is matched with the experimental group except for the one experimental variable.
temperature of the air increases
the wavelength increases from bottom to top
steel
to ensure that the results obtained are due to a difference in only one variable
changes in response to the change the scientists makes to the independent variable
black
It generates seismic waves that spread out in all directions around Earth.
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