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WorksheetsFlorida Science
Total questions: 21
Worksheet time: 19mins
A students was doing an experiment using the scientific method. Every three days the student plans to count the green leaves. Which would be a good hypothesis for this experiment?
If plants are placed in direct sunlight, then they will grow more green leaves.
If plants are places in bright light, then they will grow more green leaves than in dim light.
If plants are place in clay pots, then they will grow more green leaves than plastic pots.
If plants are in warmer temperatures, then they will grow more green leaves.
In an experiment, the one variable that is changed is called the
dependent variable
independent variable
experimental variable
controlled variable
In an experiment, the factor that we measure is called the
independent variable
dependent variable
conclusion
controlled variable
A scientist hypothesizes the the temperature at which an alligator's egg is incubated will determine whether the alligator will be male or female. The independent variable is
the male alligators
the gender of the alligator
the temperature
the incubator
A scientist hypothesizes the the temperature at which an alligator's egg is incubated will determine whether the alligator will be male or female. The dependent variable is
the temperature
the size of the baby alligators
the incubator
the gender of the baby alligators
Cindy placed three beehives with the same mass into separate (but identical) glass containers. Hive A was kept at 100˚F, Hive B was kept at 0˚F, and Hive C was kept at room temperature (75˚F ) For the next month, she measured the amount of honey each hive produced. Hive C produced more honey than the other two hives.
What is the test (INDEPENDENT) variable in Cindy's experiment?
the temperature of each hive
the number of hives
the mass of each hive
the amount of honey produced
What is being kept constant?
amount of fertilizer
amount of water
height
What is the outcome (DEPENDENT) variable?
plant height
time in days
sunflower
daisy
What is the best definition of the term "theory", as it’s used in science?
What is the best definition of the term "theory", as it’s used in science?
It is well tested set of ideas that explains events that occur in nature.
A theory is based on laws that can be proven true.
It is a hypothesis that has been confirmed
What is the difference between a scientific theory and a scientific law?
A theory is a well-tested range of representations and a law is a concrete physical representation.
A theory is a well-tested range of observations of why something works and a law is a well-tested concrete explanation how things work
A theory is a well-tested range of observations of how something works and a law is a well-tested concrete explanation of why things work
A theory is a hypothesis that is yet to be proven false and a law is a hypothesis that will always be true.
A prevailing theory about heredity is challenged by newly discovered information from a few experiments. As a result, what might happen to the scientific knowledge about heredity?
A new theory will immediately be established.
All that is known about heredity will be erased
Nothing because scientific knowledge cannot change once it is established.
Scientific knowledge may change and grow over time.
A constant is:
something that is changed on purpose
something that scientists do not yet understand
something that stays the same
something that changes because of something else
