Font size
Worksheets8-24 TEST: The Nature of Science and Safety
Total questions: 30
Worksheet time: 20mins
What is Science?
A class we have at school.
The study of the natural world.
I don't know.
Something people study.
That's right! Five answer choices! No mercy!
Information that can be gathered using the five senses and scientific instruments and tools.
Observation
Data
Inferences
Analysis
An explanation based on prior observations that can be tested.
hypothesis
prediction
scientific guess
inference
What are the steps you follow to test a hypothesis?
Experiment
Instructions
Directions
Suggestions
Examination of data
Analysis
Answers
Conclusions
A statement that indicates whether your hypothesis was supported.
Conclusion
Summary
Scientific Knowledge
The observed results of an experiment that occur from changes in the independent variable are known as (a) .
Lexi is researching crime rates. She is trying to conclude whether the crime rate changes with the population in each county in her state. What is the dependent variable in her investigation?
The county
The crime rate
The population
The state
Why is it important in science for scientists to frequently repeat the experiments of others?
Scientists often ask each other for help in performing experiments.
Replication of experiments helps to confirm and verify results.
Scientists frequently perform other scientists’ experiments in order to practice their technique.
Repeating experiments is an effective way to ensure a laboratory is in optimal condition.
What step does every scientific experiment begin with?
Hypothesis
Question/Problem
Procedures
Conclusion
The independent variable is the ONE thing you (a) .
Good scientists do all of the following, EXCEPT:
Make observations
Ask critical questions
Give up when they don't get their expected results
Adjust failed attempts and keep trying
If a fire erupts, immediately
run for the fire extinguisher.
notify the teacher.
throw water on the fire.
open the windows.
Which is the safest choice?
Lab coat, no gloves, open toe shoes, goggles
No lab coat, closed toe shoes, gloves, no goggles
Lab coat, closed toe shoes, gloves, no goggles
Lab coat, closed toe shoes, gloves, goggles
The proper technique for smelling chemicals is (a)
In which year did exactly 60 students receive scholarships?
2010
2011
2012
2013
What conclusions can you draw from this graph?
The deer population decreased over time.
The deer population increased over time.
The deer population increased quickly, then decreased, but then remained the same.
There are fewer deer because of hunters.
How many more people prefer the color purple over red?
3
5
7
9
Jennifer wants to know if students perform better on their homework when they listen to classical music or hip hop music. What is the independent variable in this experiment?
Students' grades on homework
The age of the students
The volume of the music
The type of music
What is a procedure?
Step-by-step instructions
Safety rules
What remains the same in an experiment
A prediction
What is the main reason scientists have constants?
So scientists know their results came only from the independent variable and nothing else
So scientists stay safe
So scientists can record data easier
So the experiment is clear and easy to understand
What is the base unit used for measuring length?
Meter
Gram
Liter
Celsius
What is the base unit used for measuring the volume of a liquid?
Meter
Gram
Liter
Cubic centimeter
What is volume?
The amount of space an item takes up.
The amount of matter in an object.
The length of something.
The temperature of something.
Which tool do you use to measure length?
Triple beam balance
Graduated cylinder
Thermometer
Ruler
What is the length of the green object?
(a)
What is the volume of the liquid in the graduated cylinder ?
(a)
A clear tube, marked in milliliters, is used to accurately measure the volume of liquids.
Graduated cylinder
Test tube
Triple beam balance
Ruler
What protects the eyes from flying objects or chemical splashes?
Lab apron
Balance
Eye dropper
Goggles
