Experiment Merriment
The factor in the experiment changed by the investigator
Independent variable
Billy wants to see how the temperature of the water used to clean glassware affects the amount of time it takes for the glassware to air dry. The IV is____
The temperature of the water used to clean the glassware
When an experiment is repeated exactly the same way to verify results, that's called a(n)_____
Trial
A student is experimenting with dissolving sugar in water. He can measure the volume of water in the beaker, the number of spoons of sugar added, the time that it takes for the sugar to dissolve, and the temperature of the water in the beaker.
If he wants to investigate how the number of spoons of sugar added affects the time it takes for the sugar to dissolve, what is the independent variable in this experiment?
The number of spoons of sugar added.
In an experiment with Mentos and Diet Coke, an experiment was carried out to determine which ingredient affected the soda geyser the most. In the procedure, they measured the height of geyser. Which part of an experiment was that?
The DV
The factor that is measured; experimental outcome
Dependent variable
Billy wants to see how the temperature of the water used to clean glassware affects the amount of time it takes for the glassware to air dry. The DV is____
The amount of time it takes for the glassware to air dry.
A dancer wants to see how different materials affect the amount of pressure on her feet in toe shoes. The dependent variable is_____
The amount of pressure on her feet
A student is experimenting with dissolving sugar in water. He can measure the volume of water in the beaker, the number of spoons of sugar added, the time that it takes for the sugar to dissolve, and the temperature of the water in the beaker.
If he wants to investigate how the number of spoons of sugar added affects the time it takes for the sugar to dissolve, what is the dependent variable in this experiment?
The time it takes for the sugar to dissolve.
In an experiment to see how far footballs go when the type of gas used to fill them is changed, the independent variable is____
The type of gas used to inflate the footballs
Factor kept the same throughout the experiment
Constant
Billy wants to see how the temperature of the water used to clean glassware affects the amount of time it takes for the glassware to air dry. Name two possible constants.
The type of water, the type of glassware, the type of soap, the amount of soap, the amount of scrubbing, the temperature of the surrounding room, the amount of air flow, the surface on which the glassware is set
A dancer wants to see how different materials affect the amount of pressure on her feet in toe shoes. The independent variable is_____
The type of material in the shoe
A student is experimenting with dissolving sugar in water. He can measure the volume of water in the beaker, the number of spoons of sugar added, the time that it takes for the sugar to dissolve, and the temperature of the water in the beaker.
If he wants to investigate how the number of spoons of sugar added affects the time it takes for the sugar to dissolve, what is/are the constant(s) in this experiment?
volume of water
temperature
An experiment is done to test what home treatment keeps trees healthier longer. One tree just gets water, so it is the _____
control
Experiment run without the IV, or with the IV set to some baseline value, often zero
Control
Billy wants to see how the temperature of the water used to clean glassware affects the amount of time it takes for the glassware to air dry. What would a reasonable hypothesis to this experiment be?
The warmer the water, the faster it will dry
A dancer wants to see how different materials affect the amount of pressure on her feet in toe shoes. Name two constants.
The size of the shoe, the surface on which they're worn, the amount of time en pointe, the area on which weight is applied, the weight of the dancer
A student is experimenting with dissolving sugar in water. He can measure the volume of water in the beaker, the number of spoons of sugar added, the time that it takes for the sugar to dissolve, and the temperature of the water in the beaker.
If he wants to investigate how the number of spoons of sugar added affects the time it takes for the sugar to dissolve, what will be graphed on the x axis?
Number of spoons of sugar added
In an experiment to determine how gas pressure is affected by temperature, the IV is_____.
Temperature
Why does an experiment need constants?
When factors are kept constant, it ensures that the outcome is only affected by the IV, not something else.
Billy wants to see how the temperature of the water used to clean glassware affects the amount of time it takes for the glassware to air dry. What information should go on each axis of the graph of the data?
The temperature of the water should be on the X axis, the amount of time it takes for the glassware to air dry should go on the Y axis.
A dancer wants to see how different materials affect the amount of pressure on her feet in toe shoes. A reasonable hypothesis is___
The more flexible the material, the less pressure she will feel on her feet
A student is experimenting with dissolving sugar in water. He can measure the volume of water in the beaker, the number of spoons of sugar added, the time that it takes for the sugar to dissolve, and the temperature of the water in the beaker.
If he wants to investigate how the number of spoons of sugar added affects the time it takes for the sugar to dissolve, what will be graphed on the y axis?
Time it takes for the sugar to dissolve
In the episode Hidden Nasties, the Mythbusters swab different surfaces to see if they are dirtier than a toilet seat. They perform each swabbing for the same amount of time. This is an example of a(n)_____
constant