"Exploring the Universe" Universe PPT

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"Exploring the Universe" Universe PPT

Part 1: Importing new lessons

Recall, what kind of galaxy is the solar system? Is the solar system unique in the universe?

The solar system is a celestial body system centered on the sun, the star, and composed of planets, satellites, dwarf planets, small celestial bodies (including asteroids, comets), etc.

Not the only one, every star in the sky shines and heats like the sun, and may also form a celestial system similar to the solar system.

Our solar system belongs to a group of stars - the Milky Way.

Exploring the Universe PPT, Part 2: Exploring New Knowledge

expanding universe

The composition of the Milky Way's light belt: a star group composed of many stars.

Size: 100,000 light-years in diameter.

The propagation speed of light is 300,000 kilometers per second. A light-year is the distance traveled by light in a year. It is a unit used to measure the distance between stars.

It was discovered that there are huge star groups similar to the Milky Way outside the Milky Way. For example: Andromeda, the Galaxy, and the Canes Galaxy. Currently, humans have discovered more than 10 billion extragalactic galaxies.

Can you see the edge of the universe through an astronomical telescope?

Exploring the universe PPT, part three: expansion and extension

my country’s history of space exploration:

Our country is recognized as the birthplace of rockets in the world.

In 1970, my country's first artificial satellite was launched into space.

In 1999, the Shenzhou spacecraft was launched.

In 2003, Shenzhou 5 carried Yang Liwei into space.

On October 24, 2007, "Chang'e-1" took off.

Our country has become the third major space power after Russia and the United States.

black hole

A black hole is a celestial body with extremely small density and extremely small density in the universe according to the modern general theory of relativity. Black holes are created by the gravitational collapse of a star that is massive enough and dies after the nuclear fusion reaction runs out of fuel. The gravity of a black hole is so strong that not even light can escape. In fact, a black hole is not "black", it is just that it cannot be directly observed, but its existence and mass can be known indirectly, and its impact on other things can be observed.

Exploring the Universe PPT, Part 4: Exercises for this Lesson

1. Fill in the blanks

1._______ is a __________ centered on the sun, a star, and composed of planets, satellites, dwarf planets, small celestial bodies (including asteroids, comets), etc.

2. Our solar system belongs to a star group—___________.

3. The propagation speed of light is __________ per second. A light-year is the distance traveled by light in a year. It is the unit used to measure __________ between stars.

4. People have discovered that there are huge star groups similar to the Milky Way outside the Milky Way. For example: ________, ________, ___________. At present, humans have discovered more than ________ extragalactic galaxies.

2. Multiple choice questions

1. China’s first manned spacecraft is----()

A. Shenzhou 4 B. Shenzhou 5 C. Shenzhou 6

2. In which year was China's first lunar exploration satellite, Chang'e 1, launched ------( )

A. 2003 B. 2005 C. 2007

3. The first Chinese person to enter space is ------ ( )

A. Fei Junlong B. Nie Haisheng C. Yang Liwei

4. What emits heat is ( )

A star B planet C satellite

Exploring the Universe PPT, Part 5: Homework

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

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"Exploring the Universe" Universe PPT download:

"Exploring the Universe" Universe PPT Download Part One: The Expanding Universe The solar system is a celestial system centered on the sun, the star, and composed of planets, satellites, dwarf planets, small celestial bodies (including asteroids, comets), etc. In the sky we observe...

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Update Time: 2024-09-04

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

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