NASA's first mission capable of finding Earth-size and smaller planets around other stars.
Earth’s Physical Geography Chapter 2, Section 1. Our Planet, the Earth The Earth, sun, planets,...
-
Upload
alexander-flowers -
Category
Documents
-
view
226 -
download
0
description
Transcript of Earth’s Physical Geography Chapter 2, Section 1. Our Planet, the Earth The Earth, sun, planets,...
![Page 1: Earth’s Physical Geography Chapter 2, Section 1. Our Planet, the Earth The Earth, sun, planets, and stars are all part of a galaxy, or family of stars.](https://reader033.fdocuments.in/reader033/viewer/2022051007/5a4d1b2f7f8b9ab05999a659/html5/thumbnails/1.jpg)
Earth’s Physical Geography
Chapter 2, Section 1
![Page 2: Earth’s Physical Geography Chapter 2, Section 1. Our Planet, the Earth The Earth, sun, planets, and stars are all part of a galaxy, or family of stars.](https://reader033.fdocuments.in/reader033/viewer/2022051007/5a4d1b2f7f8b9ab05999a659/html5/thumbnails/2.jpg)
Our Planet, the Earth• The Earth, sun, planets, and stars are
all part of a galaxy, or family of stars.• What is the name of the galaxy we
live in?• The sun is the center of our galaxy.
![Page 3: Earth’s Physical Geography Chapter 2, Section 1. Our Planet, the Earth The Earth, sun, planets, and stars are all part of a galaxy, or family of stars.](https://reader033.fdocuments.in/reader033/viewer/2022051007/5a4d1b2f7f8b9ab05999a659/html5/thumbnails/3.jpg)
Days and Nights• Sun 93 million miles away; provides
the Earth with light and heat• The Earth travels around the sun in
an oval-shape path called an orbit• It takes one year (365 days) for the
Earth to complete one revolution, a circular journey around the Earth
![Page 4: Earth’s Physical Geography Chapter 2, Section 1. Our Planet, the Earth The Earth, sun, planets, and stars are all part of a galaxy, or family of stars.](https://reader033.fdocuments.in/reader033/viewer/2022051007/5a4d1b2f7f8b9ab05999a659/html5/thumbnails/4.jpg)
Days and Nights• Earth spins as it revolves around the
sun on its axis, an imaginary line running through the Earth between the North and South poles
• A complete turn takes 24 hours and is called a revolution
• As Earth rotates…– It is daytime on the side facing the sun– It is night on the side away from the sun
![Page 5: Earth’s Physical Geography Chapter 2, Section 1. Our Planet, the Earth The Earth, sun, planets, and stars are all part of a galaxy, or family of stars.](https://reader033.fdocuments.in/reader033/viewer/2022051007/5a4d1b2f7f8b9ab05999a659/html5/thumbnails/5.jpg)
![Page 6: Earth’s Physical Geography Chapter 2, Section 1. Our Planet, the Earth The Earth, sun, planets, and stars are all part of a galaxy, or family of stars.](https://reader033.fdocuments.in/reader033/viewer/2022051007/5a4d1b2f7f8b9ab05999a659/html5/thumbnails/6.jpg)
Seasons• Earth’s axis is on an angle• At certain times of the year, days are long
than nights• At other times, nights are longer than days• Earth’s orbit is at a tilt– The tilt causes a region to face toward the sun for
more hours than it faces away from the sun• Days are longer
– At other times, the region faces away from the sun for more hours than it faces toward the sun• Days are shorter
![Page 7: Earth’s Physical Geography Chapter 2, Section 1. Our Planet, the Earth The Earth, sun, planets, and stars are all part of a galaxy, or family of stars.](https://reader033.fdocuments.in/reader033/viewer/2022051007/5a4d1b2f7f8b9ab05999a659/html5/thumbnails/7.jpg)
Seasons• Earth’s tilt and orbit cause changes
in temperature during the seasons• The warmth you feel at any time of
year depends on how directly the sunlight falls upon you
![Page 8: Earth’s Physical Geography Chapter 2, Section 1. Our Planet, the Earth The Earth, sun, planets, and stars are all part of a galaxy, or family of stars.](https://reader033.fdocuments.in/reader033/viewer/2022051007/5a4d1b2f7f8b9ab05999a659/html5/thumbnails/8.jpg)
Latitudes
• In some places on Earth, the sun is directly overhead at particular days during the year
• On March 21 and September 23, the sun is directly above the Equator at 0 degrees latitude.– The days are almost exactly as long as
the nights– Spring and fall equinoxes
![Page 9: Earth’s Physical Geography Chapter 2, Section 1. Our Planet, the Earth The Earth, sun, planets, and stars are all part of a galaxy, or family of stars.](https://reader033.fdocuments.in/reader033/viewer/2022051007/5a4d1b2f7f8b9ab05999a659/html5/thumbnails/9.jpg)
Latitudes• Tropic of Cancer 23 ½ degrees North of the
Equator– Sun shines directly above on June 21 or the 22nd
– First day of summer (summer solstice) in the Northern hemisphere
• Tropic of Capricorn 23 ½ degrees South of the Equator– Sun shines directly above on December 21 or 22nd
– First day of winter (winter solstice) in the Northern hemisphere
• When would summer solstice occur in the Southern hemisphere?
![Page 10: Earth’s Physical Geography Chapter 2, Section 1. Our Planet, the Earth The Earth, sun, planets, and stars are all part of a galaxy, or family of stars.](https://reader033.fdocuments.in/reader033/viewer/2022051007/5a4d1b2f7f8b9ab05999a659/html5/thumbnails/10.jpg)
Latitudes• The area between the Tropic of
Cancer and the Tropic of Capricorn is called the low latitudes, or the tropics.
• Any location in the low latitudes receives direct sunlight at some time during the year. HOT!
![Page 11: Earth’s Physical Geography Chapter 2, Section 1. Our Planet, the Earth The Earth, sun, planets, and stars are all part of a galaxy, or family of stars.](https://reader033.fdocuments.in/reader033/viewer/2022051007/5a4d1b2f7f8b9ab05999a659/html5/thumbnails/11.jpg)
Latitudes• Two other distinct regions the Arctic
Circle 66 ½ degrees north of the Equator and the Antarctic Circle 66 ½ degrees south of the Equator
• The regions between these circles and the poles are high latitudes, or polar zones– Receive no direct sunlight… COLD!!
![Page 12: Earth’s Physical Geography Chapter 2, Section 1. Our Planet, the Earth The Earth, sun, planets, and stars are all part of a galaxy, or family of stars.](https://reader033.fdocuments.in/reader033/viewer/2022051007/5a4d1b2f7f8b9ab05999a659/html5/thumbnails/12.jpg)
Latitudes• Middle latitudes, or the temperate
zones, receive fairly direct sunlight at some times, and at others fairly indirect sunlight
• Seasons occur here.– Each lasts about three months and has
distinct patterns of daylight, temperature, and weather