Question

do not write on this sheet
instructions: answer all questions. choose one answer for each question.

1. the series of steps that scientists use to solve a problem or answer a question.

a. scientific method
b. hypothesis
c. data collection
d. metric system

1. which is not a step in the scientific method?

a. make observation
b. form theory
c. form hypothesis
d. conduct an experiment

1. what is the difference between quantitative and qualitative observations?

a. quantitative observations use numbers, qualitative uses the senses.
b. quantitative observations use the senses, qualitative uses numbers.
c. quantitative observations use measurement, qualitative uses numbers.
d. quantitative observations use colors, qualitative uses the senses.

1. graphs, thermometers and scales all use ______ measurements and observations.

a. qualitative
b. quantitative
c. counting
d. sensitive

1. touch, sight, smell, taste, and hearing are all senses that use ______ observations.

a. qualitative
b. quantitative
c. sensitive

1. hypothesis

a. an educated guess
b. analysis
c. scientific knowledge
d. a testable statement or prediction that can be measured in an experiment.

1. in normal circumstances how long you sleep affects your test score. which is the independent variable?

a. how long you sleep
b. your test score
c. it doesnt make any difference
d. none of the above

1. the us current population is approximately 346 million people. this is an example of:

a. dependent variable
b. independent variable
c. qualitative data
d. quantitative data

1. the ______ variable is the variable that is changed in an experiment.

a. dependent
b. controlled
c. independent
d. flexible

1. our environment contains

a. biotic organisms
b. abiotic organisms
c. both biotic and abiotic factors
d. none of the above

1. the global sphere that includes living organisms is called

a. ecosystem

Explanation:

Answer:

a. Scientific Method
a. Make observation
a. Quantitative observations use numbers, qualitative uses the senses
b. Quantitative
c. Sensitive
d. Soft
d. an experiment
b. How long you sleep affects your test score
d. Quantitative data
c. Independent variable
c. Both biotic and abiotic factors
a. Ecosystem