SS: Space Rocks

• Physics
• Secondary Education
• Age 13

Forces and Motion

Lesson 15. 

Rocks in Space

How are you today?

😒🙁😐🙂😃

Highlights of the Day

• describe asteroids as rocks, smaller than planets, and describe their formation from rocks left over from the formation of a planetary system

• Values :  Responsibility and Determination

Space Rocks!

What is the difference between an asteroid and a meteroid?

What is the difference between an meteor and a comet?

___________ are objects made from rock that orbits the Sun.

1. comets
2. asteroids
3. meteors

Asteroids range in size up to 975 km across. The smallest asteroid that
has been studied is ________ across.

1. 2 meters
2. 4 meters
3. 2 kilometers
4. 4 kilometers

Most asteroids have __________ shapes.

1. regular
2. irregular
3. square

The largest asteroid is called _______ and was discovered in the year 1801.

1. Ceres
2. Cerius
3. Eros

crater

Moon

ព្រះ​ច័ន្ទ

Ceres

Earth

ផែនដី

The Story of Ceres

 When Ceres was discovered, scientists thought it was a new planet. As Ceres looked much smaller than a planet, the term asteroid was introduced.

Ceres looks like a small planet. It is round, with a diameter of 975 km, and covered with craters.

One of the Smallest Asteroids

Asteroid Itokawa is about 530 m long and about 250 m wide. In the year 2005, a spacecraft collected samples from the surface of Itokawa. It was the smallest asteroid to be visited at that time.

Study of the samples has given scientists more evidence about how the Solar System formed.

Self-survey: Rate your level of understanding and participation in this lesson.

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