Science Skills Warm Up 2

21 Questions | By John_Mitchell_WV | Last updated: Dec 8, 2017 | Total Attempts: 96

Welcome to the Science Electronic Learning Environment System for Physical Science and basic Chemistry. This warm up introduces (1) scientific notation, (2) SI units of Measurement, (3) limits of measurement and (4) measuring temperature. You will find additional tests for metric base and derived units. Good Luck!

Questions and Answers

1.

_____ _____ means that both variables decrease or increase at the same time.
2.

_____ _____ means that one variable increases while the other variable decreases.
- A.
  
  Directly proportional
- B.
  
  Inversely proportional
- C.
  
  Mean proportional
- D.
  
  Interpreting formula
- E.
  
  Mean formula
3.

A(n) _____ variable may be a purposeful change; a variable that was purposely manipulated for the experiment. (NOTE: Please enter in all lower case letters.)
4.

Weight of an object is usually taken to be the force on the object due to gravity. It is a magnitude or scalar quantity.
- A.
  
  True
- B.
  
  False
5.

_____ _____ is a unit of measurement that is determined by combining one or more measurements. Kilometers per hour or meters per second are examples.
6.

_____ is the quantity of three-dimensional space enclosed by some closed boundary (beaker).
- A.
  
  Mass
- B.
  
  Volume
- C.
  
  Density
- D.
  
  Pressure
- E.
  
  Frequency
7.

_____ _____ is a mathematical technique that allows you to use units to solve problems involving measurements.
8.

_____ of a material (substance) is its mass per unit volume. The Greek symbol rho is often used to show this derived unit.
- A.
  
  Density
- B.
  
  Time
- C.
  
  Amount of substance
- D.
  
  Pressure
- E.
  
  Electric charge
9.

_____ is how close measurements to the correct or accepted value of the quantity measured.
10.

Accuracy measurement shows deviation from the true and its scattered value.
- A.
  
  True
- B.
  
  False
11.

_____ _____ gives you the difference between the approximate and exact values as a percentage of the exact value and can help you see how close your guess or estimate was to a real value.
12.

Significant Figures in a measurement consist of all the digits known with certainty plus one digit, which is somewhat uncertain or may be estimated.
- A.
  
  True
- B.
  
  False
13.

The _____ temperature scale is a metric base unit?
14.

A temperature of 0 degrees Kelvin, refers to the lowest possible temperature that can be reached. In degrees Celsius, this temperature is _____.
- A.
  
  300
- B.
  
  -300
- C.
  
  273.15
- D.
  
  -273.15
- E.
  
  -156.15
15.

What is the upload time for 1 megabyte in seconds of DSL with a data transfer rate of 640 (kbps)?
- A.
  
  238
- B.
  
  125
- C.
  
  63
- D.
  
  31
- E.
  
  13
16.

What is the upload time for 1 megabyte in seconds of cable with a transfer rate of 256 (kbps)?
- A.
  
  238
- B.
  
  125
- C.
  
  63
- D.
  
  31
- E.
  
  13
17.

What is the upload time for 1 megabyte in seconds of 56K dial-up with a data transfer rate of 33.6 (kbps)?
- A.
  
  238
- B.
  
  125
- C.
  
  63
- D.
  
  31
- E.
  
  13

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