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Science Experiments
Experiments often conducted by students to test different scientific theories and hypotheses
11,111 Questions
What would most likely occur if an experimental design specifies only test group?
The experiment would lack a control group
Why should you have only one vaiable in an experiment?
Your experiment should show what the effect of a variable is on the outcome of the experiment. If you have two variables, you don't know which variable contributed what to the outcome.
For example: if want to see the effect that temperature has on water, you'll want to vary your temperature (temperature is a variable) and record your observations on the water. If nothing else is varied during your experiment and you do this experiment in your kitchen at sea level, then you may learn for instance that as you bring water temperature up from -60C to 0C it melts . If, however, you also vary your pressure (pressure is a SECOND variable) during this test, then you may find that if your pressure is 100Pa, as you bring water from -60C, it turns to vapor at ~25C!
What comes after a procedure in a science report?
Any data collected during the procedure/experiment.
the height of bean plants is recorded daily for two weeks. Is it dependent, independent, or controlled variable
What is the first you do in a experiment?
The first step to the scientific method is forming a hypothesis.
Yes it would. This is because the whole tube would be in the water, making the measurements the same throughout.
What is a physical change and what makes a chemical change?
physical change may be change in colour,odour,state(solid liquid gas) of any compound but chemical behavior of that compound remains as such; while when compound's chemical composition is changed than it is called chemically changed...
What are the variables for your science project?
There are two types of variables. The first one is called the experimental variable. It is what you are compare everything to or the normal thing. For instance, what plant grows better the one with sunlight or the one without. The one with sunlight would be the experimental variable.
The second type of variable is the dependent variable, which is the data you are collecting. Relating back to the plant experiment, how well the plant grows would be the dependent variable.
How is the student minute light years similar to the light year?
The student minute light yearas is similar to the light year because they are both light years and measure stuff in space....sorry i know this really doesn't help, but I answered the question to the best of my ability!
Kaitlyn
Salt itself does not have a distinctive smell. It is the compounds that may be present in salt, like sulfur compounds or impurities, that can introduce an odor. Generally, pure salt, such as table salt, should not have a noticeable odor.
What is a factor that the experimenter controls or changes?
An independent variable is a factor that the experimenter controls or changes in an experiment. It is manipulated to observe its effect on the dependent variable.
Is H2O can water be split a science fair project?
Yes, studying how to split water (H2O) into its component elements of hydrogen and oxygen can make for a compelling science fair project. This process, known as electrolysis, involves passing an electric current through water to separate the hydrogen and oxygen gases. It can be a great way to explore concepts in chemistry and renewable energy.
What is a factor called that makes the experimental group different from the controlled group?
The factor is called the independent variable. This is the variable that is deliberately changed by the experimenter in the experimental group to see its effect on the dependent variable.
Why you use a control in an experiment?
The control is used as a base for comparison. The experiment needs a base before one can measure any changes to it, so the control acts as that base. You don't want to change the base. Ever. EVER!
