Introduction to Earth's Atmosphere and Climates

These flashcards cover key concepts from the lecture on Earth's atmosphere and climates, including factors influencing climate, seasonal changes, and their effects on ecosystems.

What are the main factors that contribute to Earth's climates and seasons?

Various environmental factors including the Earth's tilt, its curvature, and its relation to the sun.

How does the curvature of the Earth affect solar radiation?

Solar rays hit the equator most directly, spreading out and becoming less intense as they reach the poles.

What effect does the Earth's tilt have on seasons?

The tilt causes variations in sunlight, leading to seasonal changes like winter and summer.

What happens to trees in the winter in the Midwestern United States?

Most trees go dormant due to reduced light availability.

Why do plants resume growth in spring?

Increased sunlight and temperature signal plants to sprout and reproduce.

How does the Earth's tilt affect animal behavior in spring?

Animals time reproduction to coincide with increased food availability.

What is the reason summer is warmer despite the distance from the sun?

During summer, the Earth is tilted towards the sun, receiving more direct sunlight.

What is the role of sunlight during winter?

During winter, sunlight is less intense and days are shorter, leading to colder temperatures.

What occurs to plants as temperatures drop in fall?

Plants lose leaves as they prepare for winter due to reduced sunlight.

How does the equator's position affect climate?

The equator receives consistent sunlight, resulting in little seasonal variation.

What are the tropics, and how do they differ from the equator?

Tropics are areas just above the equator that receive plenty of rain, but are not as hot as the equator.

What happens to air as you move north from the tropics?

The air becomes drier and cooler, leading to different climates.

What characterizes the climates of desert regions?

Desert regions are dry due to insufficient moisture and can be hot or cold.

What factors influence global rainfall and wind patterns?

Direct solar rays, Earth's rotation, and rising and falling air masses.

What are the westerlies?

Winds that blow from west to east in the temperate zones.

What factors dictate ocean currents?

Prevailing winds, Earth's rotation, surface heating, and continent shapes.

What is the Gulf Stream?

A warm ocean current that influences the climate of the West Coast of Great Britain.

How do ocean currents affect regional climates?

They can push warm or cold air inland, influencing local flora and fauna.

What is the significance of the sun's direct rays at the equator?

They cause the warmest temperatures and significantly influence local climates.

What role does vegetation play in tropical climates?

Vegetation contributes to humidity through transpiration, affecting local weather patterns.

How does seasonal change occur from winter to summer?

Due to the Earth's tilt and orbit, light availability increases, causing warmer temperatures.

What do shorter days and cooler temperatures in fall lead to?

They lead to a decrease in plant activity and preparation for winter.

Why do organisms have different adaptations across various biomes?

Diverse climates and environments created by factors like Earth's tilt and sunlight availability result in different adaptations.

How does Earth's tilted axis impact biodiversity?

It creates varied climates that support different ecosystems and organisms.

What is the impact of climate on ecosystems?

Climate determines the types of organisms that can thrive in different environments.