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