NPK Fertilizers: Definition & Uses


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question 1 of 3

Which of the elements in NPK fertilizer can be obtained from the air?

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1. Which element in NPK fertilizers is a rock that is mined and can be added to acids to make ingredients in fertilizers?

2. If you had a bag of 16-20-18 fertilizer, what could you assume?

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About This Quiz & Worksheet

Working through the quiz and worksheet, you can see just how much you know about NPK fertilizers and their attributes. Specifically for the quiz, you need to know about the different elements in NPK fertilizers.

Quiz & Worksheet Goals

You will be tested on:

  • Something that could be added to increase plant productivity when soil doesn't have enough nutrients
  • An element in NPK fertilizers that helps leaf growth
  • The element in NPK fertilizer that can be obtained from the air
  • An element in these fertilizers that is a rock and is added to acids to make ingredients in fertilizers

Skills Practiced

  • Reading comprehension - ensure that you draw the most important information from the lesson on NPK fertilizers
  • Information recall - access the knowledge you have gained about what you could assume if you had a bag of 16-20-18 fertilizer
  • Knowledge application - use your knowledge to answer questions about different elements of NPK fertilizers

Additional Learning

Review more material any time by accessing the lesson called NPK Fertilizers: Definition & Uses. Other topics you can study include:

  • The purpose of fertilizers
  • Why NPK fertilizers have their specific elements
  • How potassium is obtained