# 2.3 The planets

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## Planets of our solar system

The following diagram shows the inner planets of our solar system:

Statistics of

Activity: INTERPRETATION

1. How many planets revolve around the sun? ……………………………………………………

2. Which planet is closest to the sun?

3. Which planet is furthest from the sun in the diagram? ………………………………………..

1. What is the shape of the planets’ orbits?

5. Which planet is called the earth’s twin because it looks the same from space?

6. Which planet of this group has features that show the greatest resemble to those of the earth?

Activity: Draw the orbits

[LU 2.1]

The following diagram shows the outer planets of our solar system.

Statistics of the outer planets

Activity: QUESTIONS

Which planet …

1. has a red spot?

2. has rings of ice?

3. has the strongest winds?.

4. has the largest mass?

5. has the most moons?

6. is the coldest?

7. has the largest diameter?

8. has the highest temperature?

9. has a moon with an atmosphere? .

10. has a moon larger than another planet?

Assessment of QUESTIONS ON PLANETS: Did you answer the questions correctly? [ LO 2.3]

1. Study the above values and suggested distances from the sun.

1 cm = 1 Astronomical unit

Identify the planets:

A __________________

B ____________________

C _______________

D _________________

2. Arrange the planets from the largest to the smallest.

3. What planet is 5 times further than the earth from the sun?

4. What planet is 30 times further than the earth from the sun?

5. The gravity of Mars is 0,39 that of the earth. If you weigh 100 kg on earth, you would weigh 100 x 0,39 kg, i.e. 39 kg, on Mars.

How much do you weigh on earth? ……………………………

Calculate how much you would weigh on the following planets and complete the table:

6. On which planet would you:

(a) weigh the least?

(b) weigh the most?

Did you do the conversions correctly? Could you categorise the information?

[LO 2.2; LO 2.4]

Activity : GROUP WORK

CONSTRUCT A SOLAR SYSTEM

• You can work in groups to construct
• a complete solar system
• only the inner planets
• only the outer planets
• individual planets
• The project must be three-dimensional, colourful and of use to the educator.
• Suggestion: Use paper maché and water paint.
• Colours must be selected according to the features of the planet.

Assessment of CONSTRUCTION PROJECT:

Did you a) plan how you would obtain information, b) collect information and c) communicate information and findings?

[LO 1.1; LO 1.2; LO 1.3; LO 3.1]

## Assessment

LO 1: Scientific investigations:

The learner will be able to act confidently on curiosity about natural phenomena, and to investigate relationships and solve problems in scientific, technological and environmental contexts.

This is evident when the learner:

• plans investigations;
• conducts investigations and collects data;
• evaluates data and communicates findings.

LO 2: Constructing Science Knowledge:

The learner will know and be able to interpret and apply scientific, technological and environmental knowledge.

This is evident when the learner:

• recalls meaningful information;
• categorises information;
• interprets information;

2.4 applies knowledge.

LO 3: Science, Society and the Environment

The learner will be able to demonstrate an understanding of the interrelationships between science and technology, society and the environment.

This is evident when the learner:

3.1 understands science as a human endeavour.

## The planets of our solar system

ACTIVITY: INTERPRETATION

1. 9

2. Mercury

3. Neptune

4. elliptical

5. Venus

6. Mars

ACTIVITY: QUESTIONS – Which planet….

1. Jupiter

2. Saturn

3. Neptune

4. Jupiter

5. Saturn

6. Neptune

7. Jupiter

8. Mercury

9. Saturn's Titan

10. Ganymede, of Jupiter, is the largest one in our galaxy and is bigger than Mercury

ACTIVITY: CALCULATING DISTANCES (translation)

1. A = Mars ( 1,6 x 150 milj)B= JupiterC = UranusD= Pluto

2. Jupiter, Saturn, Uranus, Neptune, Earth, Venus, Mars, Mercury, and Pluto

3. Jupiter

4. Neptune

5. Each according to its own mass

6a) Pluto

6b) Jupiter

are nano particles real
yeah
Joseph
Hello, if I study Physics teacher in bachelor, can I study Nanotechnology in master?
no can't
Lohitha
where we get a research paper on Nano chemistry....?
nanopartical of organic/inorganic / physical chemistry , pdf / thesis / review
Ali
what are the products of Nano chemistry?
There are lots of products of nano chemistry... Like nano coatings.....carbon fiber.. And lots of others..
learn
Even nanotechnology is pretty much all about chemistry... Its the chemistry on quantum or atomic level
learn
da
no nanotechnology is also a part of physics and maths it requires angle formulas and some pressure regarding concepts
Bhagvanji
hey
Giriraj
Preparation and Applications of Nanomaterial for Drug Delivery
revolt
da
Application of nanotechnology in medicine
has a lot of application modern world
Kamaluddeen
yes
narayan
what is variations in raman spectra for nanomaterials
ya I also want to know the raman spectra
Bhagvanji
I only see partial conversation and what's the question here!
what about nanotechnology for water purification
please someone correct me if I'm wrong but I think one can use nanoparticles, specially silver nanoparticles for water treatment.
Damian
yes that's correct
Professor
I think
Professor
Nasa has use it in the 60's, copper as water purification in the moon travel.
Alexandre
nanocopper obvius
Alexandre
what is the stm
is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.?
Rafiq
industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
Damian
How we are making nano material?
what is a peer
What is meant by 'nano scale'?
What is STMs full form?
LITNING
scanning tunneling microscope
Sahil
how nano science is used for hydrophobicity
Santosh
Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq
Rafiq
what is differents between GO and RGO?
Mahi
what is simplest way to understand the applications of nano robots used to detect the cancer affected cell of human body.? How this robot is carried to required site of body cell.? what will be the carrier material and how can be detected that correct delivery of drug is done Rafiq
Rafiq
if virus is killing to make ARTIFICIAL DNA OF GRAPHENE FOR KILLED THE VIRUS .THIS IS OUR ASSUMPTION
Anam
analytical skills graphene is prepared to kill any type viruses .
Anam
Any one who tell me about Preparation and application of Nanomaterial for drug Delivery
Hafiz
what is Nano technology ?
write examples of Nano molecule?
Bob
The nanotechnology is as new science, to scale nanometric
brayan
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Damian
Is there any normative that regulates the use of silver nanoparticles?
what king of growth are you checking .?
Renato
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