[KNTT] Giải bài tập sách bài tập (SBT) KHTN 6 bài 50: Năng lượng tái tạo

The book "Solving exercises in the Natural Science 6 exercise book 50: Renewable Energy" is from the "Knowledge Connection" series. It provides detailed explanations and solutions to all the questions and exercises in a way that is quick and easy to understand. Through this book, students can strengthen their knowledge and grasp the lessons better.

Question 50.1:
a) What is renewable energy?
b) What is non-renewable energy?
Answer:
a) Renewable energy, or sustainable energy, is energy from continuously replenishable sources that are considered infinite by human standards, such as solar energy, wind energy, etc.
b) Non-renewable energy is energy that, once used, cannot be replenished by nature or humans within a certain timeframe. Examples include coal, oil, natural gas, etc.

Question 50.2: Which of the following energy sources is renewable?
A. Coal.
B. Natural gas.
C. Wind.
D. Oil.
Answer: C

Question 50.3: Which of the following energy sources is non-renewable?
A. Solar energy.
B. Water.
C. Wind.
D. Oil.
Answer: D

Question 50.4: Arrange the objects in Figure 50.1 in the correct order to show the process of producing electricity using solar panels.
Answer: The correct order to show the process of producing electricity using solar panels is b -> a -> c

Question 50.5: Arrange the objects in Figure 50-2 in the correct order to show the process of producing fuel from plants.
Answer: The correct order to show the process of producing fuel from plants is e -> a -> c -> d -> b

Question 50.6 *: Discuss with your group to find out which type of energy is currently commonly used in our country. Why is that type of energy commonly used?
Answer: Renewable energy is currently widely used in our country. Vietnam has great potential for developing new energy sources and renewable energy is a significant part of it. Developing renewable energy helps reduce the consumption of fossil energy, thereby reducing greenhouse gas emissions. Therefore, electricity generated from renewable energy sources is considered an ideal supplement for electricity shortages, helping to diversify energy sources and contribute to risk dispersion, strengthening and ensuring national energy security.