Science Quiz 1
Angelique wanted to find out what shampoo mad her hair the shiniest. Everyday she washed her hair with different shampoos and then rated how shiny her hair was, on a scale from 1-10. She used Pantene, Herbal Essences, L-Oreal, and just water. -Control?
water
A graph should always have?
-a descriptive title (Best: Effect of I.V. on D.V.) -IV on x-axis, DV on y-axis (most of the time) -labeled axes (include the units of measurement) -equal spacing
Controlled Experiment
-tests the hypothesis -only changes 1 variable -all other variables should be unchanged or constant
Jason wanted to find out what fertilizer worked best for growing marigolds. He put Miracle Grow on one, Scotts fertilizer on one, and no fertilizer on another. -Dependent Variable?
growth of marigolds
Jason wanted to find out what fertilizer worked best for growing marigolds. He put Miracle Grow on one, Scotts fertilizer on one, and no fertilizer on another. -Independent Variable?
type of fertilizer used
Jason wanted to find out what fertilizer worked best for growing marigolds. He put Miracle Grow on one, Scotts fertilizer on one, and no fertilizer on another. -2 Constants?
type of plant, amount of water, soil
Angelique wanted to find out what shampoo mad her hair the shiniest. Everyday she washed her hair with different shampoos and then rated how shiny her hair was, on a scale from 1-10. She used Pantene, Herbal Essences, L-Oreal, and just water. -Independent Variable?
type of shampoo
What is a graph title for: IV- Depth, DV- Bubbles/Minute
Effect of Depth on Bubbles Per Minute
Dependent Variable
the variable that is measured at the end of the experiment
Independent Variable
the variable that the scientist changes
Angelique wanted to find out what shampoo mad her hair the shiniest. Everyday she washed her hair with different shampoos and then rated how shiny her hair was, on a scale from 1-10. She used Pantene, Herbal Essences, L-Oreal, and just water. -2 Constants?
amount of water, amount of shampoo
Constant or Controlled Variable
anything that is kept the same (constant) throughout the experiment
A controlled experiment should have a _____ _____
control group
Control Group
does not have any changes/treatments and is used as a comparison group (sometimes referred as "normal" group)
Jason wanted to find out what fertilizer worked best for growing marigolds. He put Miracle Grow on one, Scotts fertilizer on one, and no fertilizer on another. -Control?
no fertilizer
Angelique wanted to find out what shampoo mad her hair the shiniest. Everyday she washed her hair with different shampoos and then rated how shiny her hair was, on a scale from 1-10. She used Pantene, Herbal Essences, L-Oreal, and just water. -Dependent Variable?
shininess of hair
