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WorksheetsPractice of Science Review
Total questions: 15
Worksheet time: 23mins
What is the DEPENDENT variable (effect) in this experiment?
"Does eating breakfast improve test scores?"
eating breakfast or not
the grade you got on the test
what time you get up in the morning
how tasty the breakfast is
You are testing how the amount you water a plant affects its growth. What would be the INDEPENDENT VARIABLE in this experiment.
They type of pot you put the plants in.
The amount you water each plant.
The amount of sunlight the plants get.
The amount the plant grows.
Mr. Pransky wants to see how different surfaces affect how high a tennis ball can bounce. What is the independent variable?
the different surfaces
using the same ball
how high they bounce
If you were testing the time it took for objects of different sizes to reach the ground after being dropped from 30 feet in the air, which of these would be the DEPENDENT VARIABLE?
The time it takes for each object to hit the ground.
The size of each object.
The type of object you use.
The height you drop the object from
Sadie is testing how the age of a seed affects how fast plants grow. Look at the picture to see if you can figure out what makes her experiment unfair. Mark all that apply.
She used different types of seeds/plants.
The plants are in different pots.
She did not plant very many plants.
Seed age might not make a difference.
Scientists create both scientific theories and scientific laws as they make observations and conduct experiments about the natural world. Which of the following statements most accurately compares the difference between scientific theories and scientific laws
sci laws are based on evidence while sci theories are not
sci theories involve only biology, while laws involve all types of science
sci theories involve mathematical equations, while sci laws are based on observations
sci theories are ideas that explain natural events, while sci laws more reliably predict natural events
Misael observes that the sun always seems to rise in the east. He talks with others and finds that everyone has the same observation. Which statement is a scientific law?
The sun rises in the east.
Why does the sun rise in the east?
The sun appears in the east because of Earth's rotation pattern.
If the sun appears in the east, then I am in the Western Hemisphere.
Which statement below correctly identifies the difference between laws and theories?
Laws describe phenomena, while theories explain why and how phenomena exist
Laws are a statement of fact, while theories are a statement of opinion
Laws explain why phenomena exist, while theories explain how
Laws are a prediction of phenomena, while theories are an explanation
A scientific investigation that involves observing the ways in which two or more objects, events, or processes are similar and different.
descriptive investigation
experiment
comparative investigation
controlled investigation
Holly spent the entire summer in Iowa watching the prairie dogs in a field. She observed that the rodents seem to have a guard that watched out for predators. The guards make a certain noise when a hawk comes by and it sounds like they make a different noise when a snake is spotted. Overall, 76 hawks were spotted and 32 snakes were spotted. How could Holly's summer activities be described?
This is an investigation because Holly only used observations and data without variables to gather scientific information.
Holly conducted an experiment. The independent variable is the type of predator, the dependent variable is the sound the prairie dog makes.
Holly used a theory to guess why the prairie dogs are making the noises when they see predators.
Holly created a new law that says prairie dogs always make noise when they see predators.
