"Explanation of Polar Day and Polar Night" Earth's Movement PPT Courseware

"Explanation of Polar Day and Polar Night" Earth's Movement PPT Courseware

During the summer in the Northern Hemisphere, the sun hangs in the Arctic sky but never sets. The daytime in the center of the Arctic can even last for half a year. We call this phenomenon polar day.

Polar day is a phenomenon that occurs within the polar circle where "the sun never sets", so it is also called "eternal day". Polar day only occurs in areas within the Earth's southern and arctic circles. When the sun shines directly in the northern hemisphere, polar day occurs in the Arctic region; polar night occurs in the Antarctic region. The opposite is true when the sun shines directly in the southern hemisphere. Within the Antarctic Circle and the Arctic Circle, there are polar day and polar night seasons every year. In the Antarctic and the North Pole, there are half a year of polar day and half a year of polar night. Except for the South Pole and the North Pole, during the polar day period, the sun still changes in altitude and orientation throughout the day.

At the two poles, the sun hangs high in the sky for half the year. Isn’t the ice and snow about to melt?

During the polar day, although the sun shines on the ground all day long, the altitude of the sun is too low, and the slanting sunlight is weak and will not melt the ice and snow.

Simulation experiment:

1. Equipment needed: globe, flashlight

2. Operation method:

①Use a globe to represent the earth and a flashlight to represent the sun.

②The earth revolves around the sun and rotates at the same time. Look at the phenomena occurring at the North Pole and Antarctica.

③ Use drawings to explain.

Our explanation:

The phenomena of polar day and polar night are related to the rotation of the earth, the revolution of the earth, and the tilt of the earth's axis.

Keywords: Earth’s movement teaching courseware, polar day and polar night explanation teaching courseware, fifth grade science PPT courseware download from the second volume of the textbook edition, fifth grade science slide courseware download, Earth’s movement PPT courseware download, explanation of polar day and polar night PPT courseware download, .PPT format;

For more information about the PPT courseware "Explanation of Polar Day and Polar Night on the Movement of the Earth", please click on the PPT tag of "Explanation of Polar Day and Polar Night on the Movement of the Earth".

"Explanation of Polar Day and Polar Night" PPT download of the movement of the earth:

"Explanation of Polar Day and Polar Night" PPT Download of Earth's Movement Part One: Exploring New Knowledge The phenomenon of polar day and polar night The phenomenon of polar day and polar night is the result of the tilt of the earth's axis causing sunlight to hit the polar regions at different times. So people in the polar regions can see the sun for a period of time...

"Explanation of Polar Day and Polar Night" Earth's Movement PPT:

"Explanation of Polar Day and Polar Night" PPT on the Movement of the Earth Part One: The Phenomenon of Polar Day and Polar Night There are many strange things in the Antarctic and Arctic of the Earth, one of which is that the polar day or night is very long. In the northern hemisphere summer, the sun always hangs over the North Pole..

"Explanation of Polar Day and Polar Night" Earth's Movement PPT Courseware 4:

"Explanation of Polar Day and Polar Night" Earth's Movement PPT Courseware 4 There are many things that are strange in the Earth's Antarctic and Arctic, one of which is that the polar day or night is very long. In the northern hemisphere summer, the sun hangs in the Arctic sky but never sets. In the Arctic...