Give two differences between: (a) Day and night (b) Sky in the morning and in the evening (c) Our activities during the day and at night (d) Activities of animals during the day and at night.
Two differences between day and night are: (1) During the day, the Sun is visible in the sky and provides light and heat, whereas at night, the Sun is not visible and the sky has the Moon and stars. (2) The sky appears bright and blue during the day, while it appears dark at night.
Two differences between the sky in the morning and evening are: (1) In the morning, the sky appears orange in colour as the Sun rises, while in the evening, the sky also appears orange but the Sun sets in the west. (2) Morning shadows point in one direction, while evening shadows appear in the opposite direction of morning shadows.
Two differences between our activities during day and night are: (1) During the day, people go to school, work, and engage in outdoor activities, while at night, people rest and sleep. (2) Most activities like studying, playing, and household work happen during the day, whereas night is mainly for sleeping and resting.
Two differences between activities of animals during day and night are: (1) Many birds and animals are active during the day searching for food, while some animals like owls and bats are active at night. (2) Birds return to their nests in the evening and become less active at night, while nocturnal animals come out at night.
Explanation
((a)) The chapter explains that the Sun is the brightest object in the sky and gives us light and heat. During the day, the Sun is visible, making the sky bright. At night, after sunset, the sky dazzles with thousands of twinkling stars and the Moon appears. ((b)) The chapter describes that during sunrise, the sky has an orange colour and the Sun appears orange. During sunset, similar changes occur. The chapter also mentions that evening shadows appear in the opposite direction of morning shadows because the Sun appears to move from East to West. ((c)) The chapter introduces the concept that activities of birds, animals, trees and humans vary during the course of the day. The 'Discuss' section on page 3 asks students to observe changes at home during sunrise and sunset, indicating different activity patterns. ((d)) The chapter mentions that the activities of birds, animals, trees and humans vary during the course of the day. The 'Discuss' section on page 3 specifically asks about what birds and animals do when the Sun rises and sets, indicating different activity patterns.