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Observation And Inference
Test Description: Deals with the differences between observations and inferences. Prompts students to determine which statement is an inference.
Instructions: Answer all questions to get your test result.
1) In order to make observations, an observer must always use
A
mathematical calculations
B
experiments
C
proportions
D
the senses
2) Using a ruler to measure the length of a stick is an example of
A
measuring the rate of change of the stick by making inferences
B
predicting the length of the stick by guessing
C
calculating the percent of error by using a proportion
D
extending the sense of sight by using an instrument
3) Which action can be performed most accurately using only the human senses?
A
adding 10 grams of salt to a cup of water
B
counting 28 shells from a beach
C
measuring the air pressure of a room
D
tearing a sheet of paper into squares whose sides measure 1 centimeter
4) Which statement made by a student after examining a rock specimen is an inference?
A
The rock is of igneous origin.
B
The rock contains large crystals.
C
The rock has rounded edges.
D
The rock is light-colored.
5) Which statement about a cumulus cloud seen over Syracuse, N.Y., is an inference?
A
The cloud has an irregular shape.
B
The cloud formed over Lake Ontario.
C
The cloud appears white.
D
The base of the cloud is determined to be 2.6 km above the ground.
6) An interpretation based upon an observation is called
A
an inference
B
a classification
C
a measurement
D
a fact
7) Which statement about a burning candle is most likely an inference?
A
The flame is yellow.
B
Carbon dioxide and water vapor are produced by the burning.
C
The wick gets shorter as the candle burns.
D
The candle wax is melting.
8) A prediction of next winter's weather is an example of
A
an inference
B
a classification
C
an observation
D
a measurement
9) The best example of an inference is a
A
measurement of air temperature
B
reading of atmospheric pressure
C
determination of dewpoint temperature
D
weather forecast for 3 days
10) Which statement about a major hurricane is an inference?
A
A rain gauge records three inches of rain in less than one hour.
B
The central air pressure is recorded at 946.0 mb.
C
The windspeed is measured at 200 km/hr.
D
Damage from the storm is expected to be extensive.
*select an answer for all questions
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