Make sure you have understood everything in this section (Lessons C1, C2, C3, and C4).
Use the Self-Check below, and the Self-Check & Lesson Review Tips to guide your learning.
This is also a good time to visit your Section 1 Checklist to make sure you have completed all the recommended learning activities.

Unit C Section 1 Self-Check

Instructions


Complete the following 6 steps. Don't skip steps – if you do them in order, you will confirm your understanding of this section and create a study bank for the future.

  1. DOWNLOAD the self-check quiz by clicking here.

  2. ANSWER all the questions on the downloaded quiz in the spaces provided. Think carefully before typing your answers. Review the lessons of this section if you need to. Save your quiz when you are done.

  3. COMPARE your answers with the suggested "Self-Check Quiz Answers" below. WAIT! You didn't skip step 2, did you? It's very important to carefully write out your own answers before checking the suggested answers.

  4. REVISE your quiz answers if you need to. If you answered all the questions correctly, you can skip this step. Revise means to change, fix, and add extra notes if you need to. This quiz is NOT FOR MARKS, so it is perfectly OK to correct any mistakes you made. This will make your self-check quiz an excellent study tool you can use later.

  5. SAVE your quiz to a folder on your computer, or to your Private Files. That way you will know where it is for later studying.

  6. CHECK with your teacher if you need to. If after completing all these steps you are still not sure about the questions or your answers, you should ask for more feedback from your teacher. To do this, post in the Course Questions Forum, or send your teacher an email. In either case, attach your completed quiz and ask; "Can you look at this quiz and give me some feedback please?" They will be happy to help you!

Self-Check Time!

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Self-Check Quiz Answers

Click each of the suggested answers below, and carefully compare your answers to the suggested answers.

If you have not done the quiz yet – STOP – and go back to step 1 above. Do not look at the answers without first trying the questions.

Humans use heat for shelter. Heat is necessary for survival in cold winter climates. Humans use heat for cooking. Heat is necessary to kill harmful bacteria in raw meat, for example. Humans use heat for comfort and to raise their standard of living. Heat is used to produce things such as glass.
Hot liquid gold particles move freely in the mould. As the liquid gold cools, the hot liquid gold particles transfer heat to the cooler surrounding air. Because the gold particles have less thermal energy, they start move slower and closer together. Eventually, the gold particles move close enough together to form a solid.
The little drops of water come from gaseous water in the air condensing on the cold pop can. Water particles in the air are warmer than the cold pop can is. Gaseous water particles near the pop can transfer heat energy to the cold pop can. When gaseous water particles lose energy, the particles start moving slower and closer together. The particles lose enough energy to turn into liquid water. This liquid water is seen as little drops on the outside of the pop can.
One of the substances that humans breathe out is water vapour. When a person gets into a very cold car, he or she breathes out water in its gas form as usual. However, when this gaseous water inside the car touches the cold car window, it condenses into liquid water and then freezes into a thin ice layer. The thin ice layer is frost inside the car. It’s time to turn the dial to defrost to blow warm air onto the windshield!
On hot days during the summer, the air particles inside a bicycle tire start to move faster and further apart. The air particles push on the rubber bicycle tire. If the air particles gain enough energy and push strongly enough, they can force the tire to burst. If the bicycle tires are not over-inflated, the air particles in the tire have sufficient space to expand without causing the tire to burst.