"In the Starry Sky (1)" Universe PPT Teaching Courseware

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"In the Starry Sky (1)" Universe PPT Teaching Courseware

Part One: Exploring New Knowledge

constellation

While observing the phases of the moon, we will also see twinkling stars in the sky. The vast starry sky often makes people sigh and wonder how to recognize the stars.

In order to facilitate identification, people grouped the stars that seemed to remain at the same distance from each other into groups and divided them into different areas. They imagined the shapes of people, animals or other objects based on their shapes, and named them. These many areas in the sky that are divided by people are called constellations.

origin of constellations

In modern times, the International Astronomical Union decided to divide the entire sky into 88 star sectors, called constellations. Among these 88 constellations, there are 29 constellations in the northern sky, 47 constellations in the southern sky, and 12 constellations along the ecliptic area (the intersection area of ​​the northern sky and the southern sky).

Build a model of the "Big Dipper"

Experiment purpose: Make a constellation model, make reasonable inferences and explanations for the model.

Experimental conjecture: When light shines from one side of the model, you will see the shadow of the plasticine forming the Big Dipper.

Experimental materials: all-sky starry sky chart, projector, cardboard, thin wire, plasticine, scissors, paper screen, etc.

Experimental steps: 1. Find a square cardboard with a side length of about 50 cm, and punch 7 small holes according to the picture.

2. Hang 15 cm, 12 cm, 15 cm, 17 cm, 27 cm, 27 cm, 14 cm thin wires in the holes No. 1-7 respectively, and hang small plasticine balls of the same size at the lower end of the thin wires. .

3. Use the light of the projector to illuminate them from the side and record the shadow of the plasticine balls on the screen.

Experimental phenomena:

(1) The plasticine balls are hung in different positions on the cardboard, some are far away from us, and some are close to us.

(2) Different graphics can be seen when illuminated from different sides.

(3) Only when the light shines from one side of the model, you will see the shadow of the plasticine forming a spoon shape, which is the Big Dipper.

PPT in the Starry Sky, Part 2: Expansion and Extension

A light year is the distance traveled by light in one year

The speed of light is 299,792,458 meters per second, which is about 300,000 kilometers.

There are 365 days in a year, 24 hours in a day, and 3600 seconds in an hour.

One light year = 300000x365x24x3600 = 9.46 trillion kilometers

In the Starry Sky PPT, Part 3: Summary of this Lesson

1. The Big Dipper is the main symbol of the Ursa Major constellation.

2. These many areas in the sky that are divided by people are called constellations.

3. Polaris can help everyone identify the direction at night, but Polaris is a not very bright star, but we can use the Big Dipper to find it more easily.

In the Starry Sky PPT, Part 4 Content: Exercises for this Lesson

True or False

1. Stars in the sky that appear to be about the same size are the same distance from us. ( )

2. The effect of stargazing on your balcony is not as good as in an open space ( ).

3. The main feature of Ursa Major is the Big Dipper ( ).

4. The main feature of the Ursa Minor constellation is Altair. ( )

2. Multiple choice questions

1. Among these 88 constellations, there are ( ) constellations in the northern sky, ( ) constellations in the southern sky, and ( ) constellations along the ecliptic area (the intersection area between the northern sky and the southern sky).

A 29 46 13 B 29 47 12

C 28 47 13 D 29 48 11

2. Constellations are composed of ( ).

A star B comet

C planet D meteor

In the Starry Sky PPT, Part 5: Homework

Share, what kind of experience do you have after studying this course?

Keywords: Free download of science PPT courseware for the second volume of the sixth grade in the textbook version, PPT download in the starry sky, PPT download of the universe, .PPT format;

For more information about the PPT courseware "The Universe in the Starry Sky", please click the "Universe in the Starry Sky ppt" tab.

"In the Starry Sky (2)" Universe PPT teaching courseware:

"In the Starry Sky (2)" Universe PPT teaching courseware Part One: Review of the previous section 1. Which constellation do Polaris and the Big Dipper belong to? 2. How to find the North Star through the Big Dipper? 3. What is a horoscope? 4. Where do the constellations come from? ... ... .....

"In the Starry Sky (2)" Universe PPT download:

"In the Starry Sky (2)" Universe PPT Download Part One: Introduction of New Lessons Through the previous few studies, we have a certain understanding of the moon phases and constellations. Take out the moon phase charts and constellation charts that we have recorded, and have a starry sky exchange meeting together. ... ..

"In the Starry Sky (2)" Universe PPT:

"In the Starry Sky (2)" Universe PPT Part 1: Hold a communication meeting What moon phases have we observed? Did we observe Polaris and Ursa Major? What other zodiac signs do we know? Take out the moon phase chart and constellation chart we recorded, everyone...

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Update Time: 2024-07-29

This template belongs to science courseware Science Edition for Sixth Grade Science Volume 2 industry PPT template

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