Maharashtra Board Class 7 Geography Chapter 1 How Seasons Occur Part 1 Solutions

1. Answer The Following Questions In One Sentence:

Question 1. How do day and nigbt occur on the earth?
Answer: Day and night occur on the earth because of the earths rotation.
In simple words: Day and night are a result of the Earth spinning on its axis, causing different parts of its surface to face towards or away from the sun.

🎯 Exam Tip: Understanding the Earth's rotation is crucial for explaining the occurrence of day and night.

Question 2. What term is used to describe the earth's revolution around the sun?
Answer: The term orbital motion is used to describe the earth's revolution around the sun.
In simple words: The Earth's journey around the sun is called orbital motion.

🎯 Exam Tip: Differentiate between rotation (spinning on its axis) and revolution (orbital motion around the sun).

Question 3. How long does the earth take to do so?
Answer: The earth takes 365 days and 6 hours to complete one revolution.
In simple words: It takes about one year (365 days and 6 hours) for the Earth to complete one full orbit around the sun.

🎯 Exam Tip: Remember the exact duration for the Earth's revolution, as it's a fundamental concept for understanding years and leap years.

Question 4. In which hemispheres is our country located?
Answer: Our country lies in the northeastern hemisphere.
In simple words: India is situated in the northern part of the Earth, and also in the eastern part.

🎯 Exam Tip: Know the geographical location of your country in terms of hemispheres.

Question 5. Why don't the sun's rays fall perpendicularly at all places on the earth?
Answer: The sun's rays do not fall perpendicularly at all the places on the earth because the earth is not flat but spherical in shape.
In simple words: Due to the Earth's round shape, sunlight hits different parts of its surface at varying angles, so it doesn't fall directly everywhere.

🎯 Exam Tip: Connect the Earth's spherical shape to the varying angles of sun's rays, which influences temperature zones.

2. Can You Tell?

Records of the entries of sunrise and sunset for the month of June are given below. Answer the questions, that follow.

Question 1. Refer to the table above and state which are the longest days?
Answer: The longest days are from 19th June to 26th June.
In simple words: Looking at the "Day" column in the table, the longest durations, specifically 13 Hrs. 16 Min., occur between June 19th and June 26th.

🎯 Exam Tip: Carefully analyze the data in the table to identify patterns or specific values requested in the question.

Question 2. What difference do you notice in the duration of the nights from 19th June to 28th June?
Answer: The duration of the nights keeps on increasing day by day.
In simple words: Over the period from June 19th to June 28th, the length of the night gradually gets longer.

🎯 Exam Tip: Observe trends in data columns, such as increasing or decreasing values, to answer questions about changes over time.

Question 3. What is the reason behind it?
Answer: The sun is now moving southwards.
In simple words: The increasing night duration is because the apparent position of the sun is shifting towards the south after the summer solstice.

🎯 Exam Tip: Relate observed seasonal changes in day/night duration to the sun's apparent movement and Earth's tilt.

Question 4. How did you find out the duration of the night?
Answer: The duration of the day is subtracted from 24 hours to get the duration of the night.
In simple words: To calculate night duration, simply subtract the day duration from the total 24 hours in a day.

🎯 Exam Tip: Remember the basic formula: Total Hours (24) - Day Duration = Night Duration.

Question 5. Which two dates have days and nights of the same duration?
Answer: March 22 and September 23 have the same duration of days and nights.
In simple words: The dates around the spring and autumn equinoxes, March 22nd and September 23rd, experience nearly equal day and night lengths.

🎯 Exam Tip: These dates (equinoxes) are important to remember as they signify equal day and night across the globe.

Question 6. With the help of the table, you saw how the duration of the day and the night changes. Do you think such a change occurs everywhere on the earth?
Answer: Yes, duration of day and night changes everywhere on the earth.
In simple words: The varying lengths of day and night are a global phenomenon, affecting all regions on Earth, though the extent of change differs by latitude.

🎯 Exam Tip: Understand that the Earth's tilt causes universal changes in day/night duration, but these changes are more pronounced at higher latitudes.

Question 7. Use the above format to record the duration of daytime from 19th to 28th of every month from September to December.
Answer: Students should expected to attempt the activity & answer on their own.
In simple words: This question requires you to perform a practical activity, collecting and recording data similar to the provided table for different months.

🎯 Exam Tip: Practice data collection and observation skills, as such activities help in better understanding geographical concepts.

3. Think About It:

Question 1. If the position of the shadow on the wall moves towards the north, in which direction does the location of sunrise or sunset appear to shift?
Answer: If the position of the shadow on the wall moves towards the north, the location of sunrise or sunset will shift southwards.
In simple words: When a shadow moves north, it indicates that the sun's path, and therefore the points of sunrise and sunset, are shifting towards the south.

🎯 Exam Tip: Relate the apparent movement of shadows to the sun's position and the shifting points of sunrise and sunset throughout the year.

Fill In The Blanks Choosing The Correct Options From The Brackets:

Question 1. The earth's _______ has enabled us to measure time in terms of days. (revolution, rotation, orbital motion)
Answer: rotation
In simple words: The Earth's spinning motion, called rotation, is what defines a day and helps us measure time.

🎯 Exam Tip: Understand that rotation causes day and night, forming the basis of our daily time measurement.

Question 2. The earth rotates from _______ (north to south, east to west, west to east)
Answer: west to east
In simple words: The Earth spins from its western side towards its eastern side.

🎯 Exam Tip: Remember the direction of Earth's rotation (west to east), as it's fundamental to observing sunrise in the east.

Question 3. The Earth takes _______ hours to rotate around itself. (365,144, 24)
Answer: 24
In simple words: It takes 24 hours for the Earth to complete one full spin on its axis, resulting in one day.

🎯 Exam Tip: The 24-hour rotation period is a core fact for understanding the length of a day.

Question 4. India lies in the _______ hemisphere. (northeastern, northwestern, southeastern)
Answer: northeastern
In simple words: India is located in the northern hemisphere and also in the eastern hemisphere, combining to be the northeastern hemisphere.

🎯 Exam Tip: Correctly identify the hemisphere your country is located in for geographical context.

Question 5. The _______ of sunrise and the sunset on the horizon³ for the whole year keep on changing. (position, shadow, rotation)
Answer: position
In simple words: The exact point where the sun rises and sets on the horizon shifts throughout the year due to the Earth's tilt.

🎯 Exam Tip: The changing position of sunrise/sunset is a direct consequence of the Earth's axial tilt and its revolution around the sun.