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In an experiment Jackson tested to see how the size of rocks affect the amount of dirt that washes away when water flow downhill. Which variable is manipulated?
Size of Rocks
amount of mouthwash
If a needle floats on water, then it will work like a compass
the dependent variable
the kind of food he gives his dog
If objects are put into salt water, then they will float better than in fresh water.
The same bush and the same soil
If a person expects to be tickled, then he will laugh even when he is not actually tickled
Sandy is conducting an investigation to find out which food his dog likes best. Which is the manipulated variable in his investigation
Size of Rocks
amount of mouthwash
If a needle floats on water, then it will work like a compass
the dependent variable
the kind of food he gives his dog
If objects are put into salt water, then they will float better than in fresh water.
The same bush and the same soil
If a person expects to be tickled, then he will laugh even when he is not actually tickled
A student wanted to know which brand of mouthwash killed the most germs. Which part of the experiment should be kept constant?
Size of Rocks
amount of mouthwash
If a needle floats on water, then it will work like a compass
the dependent variable
the kind of food he gives his dog
If objects are put into salt water, then they will float better than in fresh water.
The same bush and the same soil
If a person expects to be tickled, then he will laugh even when he is not actually tickled
If I plant a bush in a shaded area and a well lit area, then the bush in the well lit area will have more growth. What would be considered the constant?
Size of Rocks
amount of mouthwash
If a needle floats on water, then it will work like a compass
the dependent variable
the kind of food he gives his dog
If objects are put into salt water, then they will float better than in fresh water.
The same bush and the same soil
If a person expects to be tickled, then he will laugh even when he is not actually tickled
A student asked How does the expectation of being tickled affect someone? What statement is the best hypothesis for this experiment?
Size of Rocks
amount of mouthwash
If a needle floats on water, then it will work like a compass
the dependent variable
the kind of food he gives his dog
If objects are put into salt water, then they will float better than in fresh water.
The same bush and the same soil
If a person expects to be tickled, then he will laugh even when he is not actually tickled
A student asked, Do objects float better in fresh water or salt water? What is the best hypothesis that matches this experiment.
Size of Rocks
amount of mouthwash
If a needle floats on water, then it will work like a compass
the dependent variable
the kind of food he gives his dog
If objects are put into salt water, then they will float better than in fresh water.
The same bush and the same soil
If a person expects to be tickled, then he will laugh even when he is not actually tickled
Which example is an hypothesis written in the correct format
Size of Rocks
amount of mouthwash
If a needle floats on water, then it will work like a compass
the dependent variable
the kind of food he gives his dog
If objects are put into salt water, then they will float better than in fresh water.
The same bush and the same soil
If a person expects to be tickled, then he will laugh even when he is not actually tickled
If I use foam padding in a box, then (it will absorb the sound waves) What is the part of the hypothesis in parenthesis?
Size of Rocks
amount of mouthwash
If a needle floats on water, then it will work like a compass
the dependent variable
the kind of food he gives his dog
If objects are put into salt water, then they will float better than in fresh water.
The same bush and the same soil
If a person expects to be tickled, then he will laugh even when he is not actually tickled
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