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1. Prefixes change the meaning of nouns, adjectives, and verbs. Sometimes a hyphen is used with a prefix and sometimes it is not (e.g. semi-final, semicolon). You may need to check in a dictionary.

1. Prefixes change the meaning of nouns, adjectives, and verbs. Sometimes a hyphen is used with a prefix and sometimes it is not (e.g. semi-final, semicolon). You may need to check in a dictionary.

Adding Prefixes and Suffixes

FIND OUT THE CORRECT PREFIX

This exercise requires students to complete given sentences by placing the correct prefix in front of words that begin with 'r' or 'l.'

This exercise requires students to write the correct prefix for words which begin with 'l.'

Midterm Quiz - 4th Partial

Select the correct prefix for the words.

Answer the following:

A. Complete the sentences by choosing the correct "tch" word in the word box.
 

B. Add a prefix to each root word to make it mean the “opposite”.

Part 1: Add the correct prefix from your unit list to the root word in parentheses.

Log Entry: 04:00 AM The air at this altitude is ____________ (sufficient) for most people to breathe easily. We noticed that the local residents have ____________ (active) lungs that have adapted over generations. It is a common ____________ (understanding) that humans cannot live this high up, but these villagers prove that theory wrong.

Log Entry: 12:00 PM We had to ____________ (place) our equipment because the wind blew our original tent away. The terrain is very ____________ (regular) and rocky, making it hard to walk. We decided to set up a ____________ (permanent) camp until the storm passes.

Log Entry: 08:00 PM The villagers ____________ (act) with each other in a way that shows great community strength. Even in this ____________ (pleasant) cold, they remain cheerful. It is ____________ (possible) to imagine living anywhere else once you see this view.

Part 2: The Prefix Sorting Lab

Use the "Secret Code" rules to add the correct negative prefix (im-, il-, ir-, un-, or dis-) to these words.

1.  

   ____________ + literate: Someone who cannot read or write.

    

2.  

   ____________ + perfect: Something that has a small flaw or mistake.

    

3.  

   ____________ + rational: Something that does not make logical sense.

    

4.  

   ____________ + modest: Someone who brags too much about themselves.

    

5.  

   ____________ + legal: Something that is against the law.

    

Part 3: Critical Thinking

In one sentence, use a word with the prefix Inter- (meaning "between") to describe how two different locations might be connected.

Your Sentence: ______________________________________________________________________

Write the new word based on given root word and definition of the prefix.

Write your answers on the space provided.

​1. SI Base Unit for Electric Current ​Answer: Ampere (\text{A}) ​2. Fundamental (Base) Physical Quantity ​Answer: Mass (Velocity, Force, and Work are all derived quantities). ​3. Dimensional Formula for Mechanical Energy or Work ​Answer: M L^2 T^{-2} (derived from \text{Work} = \text{Force} \times \text{Displacement} = (M L T^{-2})(L) = M L^2 T^{-2}). ​4. Speed Conversion (72\text{ km/h} to \text{m/s}) ​Answer: 20\text{ m/s} (Calculation: 72 \times \frac{5}{18} = 20\text{ m/s}) ​5. Significant Figures in 0.00450\text{ m} ​Answer: 3 significant figures (leading zeros are placeholders, while the trailing zero after the decimal is significant). ​6. Metric Prefix and Symbol for 10^{-9} ​Answer: Nano, represented by the symbol \text{n}. ​7. Dimensional Check of v = u + at ​Answer: Dimensionally consistent. ​Velocity (v and u): [L T^{-1}] ​Acceleration \times time (at): [L T^{-2}] \times [T] = [L T^{-1}] ​Since all terms share the exact same dimensions ([L T^{-1}]), the equation is valid. ​8. Derived Physical Quantity for \text{kg} \cdot \text{m} / \text{s}^2 ​Answer: Force (which is measured in Newtons, \text{N}). ​9. Scientific Notation for 5,600,000\text{ m} ​Answer: 5.6 \times 10^6\text{ m} (assuming two significant figures based on the standard presentation, or 5.60 \times 10^6\text{ m} if three are implied). ​10. Fundamental Dimensions of Pressure ​Answer: M L^{-1} T^{-2} (Pressure = \frac{\text{Force}}{\text{Area}} = \frac{M L T^{-2}}{L^2} = M L^{-1} T^{-2}) 

Write the words to complete and check.

Selecting the correct prefixes

Word formation practice unsing prefixes and suffixes

Adding the correct prefixes to form new words.

write the prefixes