Explain what makes a liquid more or less dense?

1 answer:

8 0

Liquids are usually less dense than solids but more dense than air. Temperature can change a liquid's density. For example, increasing the temperature of water causes the molecules to spread farther apart. The farther apart the molecules are, the less dense the water is.

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C. Collision

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Which guideline should be followed while reviewing a presentation for effectiveness?

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The guidelines that should be followed while reviewing a presentation for effectiveness are using short crisp pointers, simple presentation, making use of charts, tables, etc. to make it attractive, using easy language and well-labelled pictures.

Here are some points that might be considered while reviewing a presentation-

1. Keeping the presentation simple.

2. User pointers instead of using long paragraphs.

3. Present your points in short and crisp manner.

4. Summarize your main points.

5. Do not make too lengthy slides

6. Make use of pictures, tables, charts and graphs

7. Label everything

8. Use easy-to-read fonts

9. Identify the journal when you give references for presentation.

10. Preview your presentation.

To read more about reviewing a presentation here

brainly.com/question/8920216

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How does a primary source help a historian understand the past

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Primary sources are valuable to historians because they give insight into the ways in which historical figures understood or internalized what they experienced, their place or significance in history, and give historians an understanding of historical figures' opinions.

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