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WorksheetsIntro Unit Scientific Method
Total questions: 15
Worksheet time: 8mins
A scientist performed an experiment that had an unexpected result. He re-experimented before reporting results. Why would he do this?
he wanted to make sure no one else could do the experiment
he had extra chemical and wanted to use them all
he wanted to be sure the results were accurate
he wanted to get different results
What skill are you using when you gather information through your 5 senses?
questioning
observing
inferring
explaining
When a scientist records a quantitative observation, they must write down a
fact
opinion
number
feeling
Which of the following statements is a qualitative observation?
that chair has four legs
that chair is soft
that chair is two meters tall
that chair has one pillow
A student group takes a field trip to limestone outcroppings and made observations, on of which was an inference. Which would be the inference?
the surfaces of the limestone have small holes
the outcroppings have black crust
the surfaces of the limestone are rough
the outcroppings have been acted on by acid rain
Scientists often test their hypothesis with controlled experiments. Which of these is a rule for conducting a controlled experiment?
change at least two variables at a time
keep all variables constant
change as many variables as possible
change only one variable at a time
Joey wanted to know if the size of his paper airplane affected the distance it would travel. If he set up an experiment to find out, what would his independent variable be?
the distance the airplane travels
the speed of the airplane
the size of the airplane
the shape of the airplane
Joey wanted to know if the size of his paper airplane affected the distance it would travel. In order for Joey to conduct a fair test, which of the following controlled variables should he have in his experiment?
the shape of the airplane
the type of paper used
the force of the launch
all of the answer options
John and Emily were experimenting with the effects of salt on plant growth. To do this, they watered plants daily with the same amount of salt water. They could best improve their experiment by
increasing the amount of salt added to the water each day
cooling the salt water before watering the plants
adding food color to see how far the salt penetrates the plants
watering half the plants with pure water and half with salt water
Karen wants to grow the largest tomato plants for the fair. She decides to compare two new plant foods. She has three plants that receive the same amount of sunlight, water, and temperature. One plant A gets food A, plant B food B, and plant C receives none. She measures the height each week.
Plant C is part of which group?
control
variable
data
experimental
Karen wants to grow the largest tomato plants for the fair. She decides to compare two new plant foods. She has three plants that receive the same amount of sunlight, water, and temperature. One plant A gets food A, plant B food B, and plant C receives none. She measures the height each week.
The plant food is the...
dependent variable
independent variable
qualitative data
control group
The class hamsters Ron and Lucy had a litter of baby hamsters. One white, two brown, three striped brown/white, and two black. Which of the following graphs shows this data most clearly and correctly?
Looking at the hamster graphs, which type of graph would be best for showing the growth of a tree over time?
In an experiment designed to determine if a specific brand of cat food is causing cats to meow excessively, it would be best to
keep feeding cats with the specific brand of cat food and record the results
mix together the specific brand of cat food with another brand of food and feed to cats
let some of the cats drink water with the specific brand of food
feed some cats with the specific brand of cat food and other cats with another brand
Trina wanted to find out which of her rubber balls can bounce the highest. She took the first ball and dropped it onto the cement sidewalk. So then dropped the second ball from the same height onto the grass. She recorded how high each ball bounced. Her experiment could be improved by
measuring the time it takes for each ball to reach its maximum height
bouncing both balls on one of the surfaces
dropping the second ball from a higher height
bouncing the ball on the grass two times
