Here are the answers to your quiz questions:
Question 1: Why is Earth often referred to as the blue planet?
Answer: The hydrosphere looks blue and covers three-fourths of the Earth's surface.
Question 2: In which sphere would lightning be found?
Answer: atmosphere
Question 3: The Earth's crust is part of which sphere?
Answer: lithosphere
Question 4: What is the name for the rocky upper layer of the solid earth?
Answer: lithosphere
Question 5: Which of the following describes the zone of life on the Earth that includes all living things?
Answer: biosphere
If you have any further questions or need additional information, feel free to ask!