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- 1. Multiple ChoiceHow many variables can be tested in a controlled experiment?onetwothreeas many as possible
- 2. Multiple ChoiceThings that stay the same throughout the whole experiment are calledcontrolsdependent variablesindependent variablesconstants
- 3. Multiple ChoiceThis variable in an experiment is the one being deliberately changed by the scientist.dependent variableindependent variabledatacontrol group
- 4. Multiple Choice
Experiment: Sendel wants to see if taking the backroads to work is faster than taking the highway during rush hour.
In Sendel's driving experiment, what is the independent variable?
What time of day she drives
The route she takes to work
The speed at which she drives
The time is takes to get to work
- 5. Multiple ChoiceAn experiment is conducted to test how different cleats change an athletes running speed. Six different types of cleats are tested and the 100m run time is recorded. What is the independent variable?The type of cleatThe run timeThe 100 metersThe athlete
- 6. Multiple Choice
A student wants to test the effects of different types of exercise on heart rate. What is the dependent variable?heart ratetype of exerciseamount of exercisetime of day exercise occurs - 7. Multiple ChoiceThis variable is the actual data collected during the experiment.independent variabledependent variablecontrol groupdata group
- 8. Multiple Choice
Ben makes five paper helicopters with different wing lengths. He drops them the same way from a height of two meters for five trials each. He records the amount of time it takes for each helicopter to fall to the ground.
What are two controlled variables? (Select 2 answers)
Dropping the same way
Wing Length
Amount of time it takes the helicopter to hit the floor
Dropping from the same height
- 9. Multiple Choice
A student performed an experiment that tested how many days it takes different types of grass seed to grow to a height of two inches. Four types of grass seed were tested, and the student recorded the number of days for each type to grow. Use this information to answer the next question.
What should be held constant in this experiment?
amount of sunlight, amount of water, and type of soil
amount of sunlight
amount of water and type of soil
amount of water
- 10. Multiple Choice
Jordan is doing a science project on the effects of music on the growth of tomatoes. He has 2 plants, 1 will be exposed to classical music, the 2nd won't be around music. What is the manipulated variable?
music
type of tomato
music volume
number of tomatoes
- 11. Multiple Choice
Jordan is doing a science project on the effects of music on the growth of tomatoes. He has 2 plants, 1 will be exposed to classical music, the 2nd won't be around music. Jordan counts the number of tomatoes produced by each plant. What is the measured variable?
type of tomato
size of tomatoes
weight of tomatoes
number of tomatoes
- 12. Multiple ChoiceAn experiment is conducted to test which kind of cat food a cat likes best. The amount of food the cat eats is recorded and four different type of food are tested. What is the dependent variable?The cat foodThe catThe amount of food the cat eats.The bowl the cat ate out of.
- 13. Multiple Choice
Ellin is conducting a scientific investigation in which she measures a certain type of plant's growth in response to different amounts of fertilizer. What is the independent variable?
Amount of fertilizer
Plant growth
Type of plant
Temperature of the fertilizer
- 14. Multiple Choice
A student wants to test how different amounts of UV light affect the growth of the bacteria, Staphylococcus aureus. She wants to grow the bacteria in petri dishes for her experiment. Which of the following variables should NOT be held constant in this experiment?
amount of UV light bacteria is exposed to
amount of time to grow bacteria
location of petri dishes while growing bacteria
type of bacteria (Staphylococcus aureus)
- 15. Multiple Choice
The factor that is being measured in an experiment is called the ___.
dependent variable
independent variable
constant
hypothesis
- 16. Multiple Choice
James is conducting an experiment to test the effect of insecticides on frogs. What is the control group in his experiment?
The frogs that were NOT exposed to the insecticides.
The frogs that were exposed to 15 mL of insecticide.
The frogs that were exposed to 30 mL of insecticide.
The frogs that did not survive the experiment.
- 17. Multiple Choice
Factors in an experiment that must be kept the same are called ___.
constants
variables
hypothesis
experimental error
- Answer choicesTagsAnswer choicesTags