Page 78 - Ripples SCIENCE 7 - TEJPUR Edition 2024 Answer Key

G. Long-answers questions.

1. ‘Sun is the major cause of change in weather’. Explain.

Ans. The Sun is the primary driver of weather changes on Earth. Its solar radiation
heats the Earth's surface unevenly due to the planet's tilt and rotation, creating

temperature differences. These differences cause air movement, forming wind and
weather patterns. The Sun's heat also leads to water evaporation, cloud formation,

and precipitation. Additionally, it affects atmospheric pressure, contributing to wind

formation. Seasonal changes occur because different parts of the Earth receive
varying amounts of sunlight throughout the year. In short, the Sun's energy is essential

for creating the temperature variations, wind, and precipitation that constitute our
weather.

2. What is the relationship between weather, climate and adaptation?

Ans. Weather, climate and adaptation are closely related.
Weather refers to the short-term atmospheric conditions, like rain or sunshine that

we experience daily.

Climate is the average weather pattern in a region over a long period, such as the hot,
humid climate of a tropical area or the cold climate of the polar regions.

Adaptation is how living organisms adjust to their environment to survive. For

example, camels have adapted to live in the hot desert by storing water in their
bodies, while polar bears have thick fur to keep warm in cold climates.

In summary, weather is the day-to-day condition, climate is the long-term pattern,
and adaptation is how organisms cope with these conditions to survive and thrive.

3. Differentiate between weather and climate.
Ans. The differences between weather and climate are given below :

Weather Climate
It is a condition of the atmosphere in It is the average weather condition of a place
a specific place at a given time. This and it is mostly established after several years,
condition of the atmosphere may vary a decade or more.
from one day to the next.

Weather may involve just one condition Climate includes all the conditions of the
of the atmosphere. atmosphere, such as temperature, precipitation
(rain, snow, hailstone and others), wind,
humidity, clouds and pressure.

The changes in weather conditions can The changes in climate take longer to be visible.
be observed very frequently.

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