The series of steps that scientists follow in order to solve problems
scientific methods
100
A person who uses science to solve problems involving machines is called a:
1. geochemist
2. entomologist
3. mechanic
mechanic
100
What is a model?
a. representation of an object or system
b. smaller version of the real thing
c. a nonworking copy
d. a possible substitute for a hypothesis
a. representation of an object or system
100
A scientific statement of HOW somethings works but not WHY is
a. a scientific law
b. a hypothesis
c. an observation
a. scientific law
200
The size of a surface of a region is the
a. area
b. volume
c. density
a. area
200
What should be true of any good hypothesis?
a. it should sum up all previous scientific investigation
b. it should be based on observation and be testable
c. it should allow the scientist to get the predicted result
b. it should be based on observation and be testable
200
A scientist who studies the ocean is called an _________________.
Oceanographer
200
Which of the following describes scientific models correctly:
A. useful but not perfect
B. not useful unless perfect
C. not useful but perfect
D. useful only if perfect
A. Useful but not perfect
200
What is the equation for area?
Area = length x width
300
What are the common units for measuring:
1. length
2. mass
3. volume
1. meter
2. gram or kilogram
3. liter or milliliter (liquids), cubic meters, cubic centimeters (solids)
300
A possible explanation or answer to a question is called a
a. scientific method
b. controlled experiment
c. variable
d. hypothesis
d. hypothesis
300
A scientist who studies the lives of animals is called a
_____________________.
zoologist
300
What is one benefit of scientific models?
a. Models are exactly like the original
b. Models take the place of scientific law
c. Models can represent something that does not exist
d. Models can replace any further investigation
c. Models can represent something that does not exist
300
Which of the following are methods of investigation?
a. physical, mathematical, conceptual
b. search, observance, hypothesis
c. research, observation, experimentation
c. research, observation, experimentation
400
What does volume measure? (definition for "volume")?
size of a body or a region in 3-dimensional space
400
Experiments that test only one factor at a time, and which consist of a control group and one or more experimental groups are
c. controlled experiments
400
What does a geochemist study?
The chemistry of rocks, mineral and soil
400
What are the three types of scientific models?
Physical
Conceptual
Mathematical
400
What is true of a scientific theory?
a. it explains how but not why
b. it is an explanation that ties together many hypotheses and observations
c. it is an explanation based on a single hypothesis
b. it is an explanation that ties together many hypotheses and observations
500
Why is the International System of Units important to science?
1. It is widely used (all over the world)
2. Makes it easy to share data and collaborate
500
Name four of the seven steps of the scientific method
1. Ask a question
2. Make observations
3. Form a hypothesis
4. Test the hypothesis
5. Analyze results
6. Draw conclusions 7. Communicate results
500
A scientist who studies insects is called an _________________.
Entomologist
500
The idea that the solar system is formed from spinning gas is an example of a _________________ model.
a. mathematical
b. physical
c. conceptual
c. conceptual
500
_______________ is the knowledge obtained by observing natural events and conditions in order to discover facts and formulate principles.
a. science c. variable
b. hypothesis c. history