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Natural sciences

Grade 4

Planet earth and the universe

Module 38

Talking about satellites

Activity:

To talk about satellites

[lo 1.3, 3.1]

Objects that travel along a route or path in outer space are in an orbit.

Rockets or space shuttles propel satellites into space to where they are placed in an orbit where they have to keep travelling at the correct speed. When they travel too fast, they will veer off into outer space. If they are too slow, they will fall to the earth. People on earth use computers to control the speed of the satellites.

The use of satellites

Hold a group discussion about the uses of satellites and see how many your group can name. Give feedback to the class and write down the best ideas in the space below.

Where do satellites come from?

The following sentences have become mixed up. See if you can place them in the correct order by arranging the correct numbers in the blocks below.

1. In 1957 the Russians sent the first man-made satellite into space. Its name was Sputnik 1. Try to find more information on Sputnik 1.

2. Isaac Newton believed that people were able to make satellites that could orbit the Earth in the same way as the moon. But he needed something to get the satellite into space.

3. In 1961, Yuri Gagarin was the first person to be sent into space. After this, satellites were sent into space on a regular basis.

4. In 1929, Robert Goddard, an American, built a rocket that did not go very high, but this started the development of the technology that was needed.

5. In 1957 the Americans also tried to launch a satellite, the Vanguard, but it exploded on the launching pad!

6. In 1957 a dog called Laika was sent into space in Sputnik 2, and this showed that living creatures could travel in space.

Something interesting: Make your own action picture book.

  • Draw 32 blocks of the same size on a clean sheet of paper. Your teacher will show you pictures of a spacecraft being launched as an example. You can draw this or choose your own theme for your picture book.
  • Now draw a picture in each block showing the spacecraft taking off. Each block must show the craft a little further away from the launching pad and moving up into space. When the pages are bound together, you can let them flip and it will seem as if the spacecraft is lifting off.
  • When all your pictures are complete, cut them out neatly. Make two holes on the one side and place them in the correct order – 1 to 32 with number 1 at the bottom. Thread string through the holes to bind them. You could strengthen it with Sellotape.
  • Now hold your book by the side that is bound and flick through the pages from the back to the front with your other hand. Your picture should move. This should be great fun!

Assessment

LEARNING OUTCOME 1: SCIENTIFIC INVESTIGATIONSThe 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.

Assessment Standard

We know this when the learner

1.3 evaluates data and provides feedback on observations.

LEARNING OUTCOME 3: SCIENCE, SOCIETY AND THE ENVIRONMENTThe learner will be able to demonstrate an understanding of the interrelationships between science and technology, society and the environment.

Assessment Standard

We know this when the learner

3.1 understands science and technology in the context of history and personal knowledge.

Memorandum

SATELLITES

  • The usefulness of satellites
  • Have a group discussion on the usefulness of satellites and see how many your group can name. Give feedback to the class and write down the best ones. These are good examples:
  • We can communicate with people all over the world by means of telephone, faxes, Internet, e-mail, etc.
  • We can take pictures of space
  • By means of photos we can gain information about what is happening in space and on other planets
  • We can look at earth from space
  • We can predict the weather accurately
  • We can listen to the radio
  • We can watch direct sport broadcasts, even if they happen in other countries

Where and how did satellites originate?

The following sentences have been shuffled. See if you can put them in the right order by placing the numbers correctly in the blocks.

1. Isaac Newton believed it was possible to make a satellite and send it into space to orbit earth, just like the moon. But he needed something to get the satellite into space!

2. An American, Robert Goddard, built a rocket in 1926. It did not go very high, but at least it was the beginning of the technology.

3. In 1957 the Russians sent the first man-made satellite into space. It was called Sputnik 1. See if you can find more information on Sputnik 1.

4. In 1957 a dog called Laika was sent to space in Sputnik 2, to prove that living beings can travel in spacecraft.

5. In 1957 America also tried to launch a satellite, but the Vanguard exploded on the launch pad!

6. In 1961 the first human, Yuri Gagarin, was sent into space. After this, satellites were launched regularly.

  • Something interesting: Make your own action picture booklet.
  • Show enough pictures and books so that learners can get a good idea of satellites.
  • Attached is an example you can show the class. Let them make their own creative booklets.

Questions & Answers

Do somebody tell me a best nano engineering book for beginners?
s. Reply
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
s.
what is the Synthesis, properties,and applications of carbon nano chemistry
Abhijith Reply
so some one know about replacing silicon atom with phosphorous in semiconductors device?
s. Reply
Yeah, it is a pain to say the least. You basically have to heat the substarte up to around 1000 degrees celcius then pass phosphene gas over top of it, which is explosive and toxic by the way, under very low pressure.
Harper
how to fabricate graphene ink ?
SUYASH Reply
for screen printed electrodes ?
SUYASH
What is lattice structure?
s. Reply
of graphene you mean?
Ebrahim
or in general
Ebrahim
in general
s.
Graphene has a hexagonal structure
tahir
On having this app for quite a bit time, Haven't realised there's a chat room in it.
Cied
what is biological synthesis of nanoparticles
Sanket Reply
what's the easiest and fastest way to the synthesize AgNP?
Damian Reply
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Cied
types of nano material
abeetha Reply
I start with an easy one. carbon nanotubes woven into a long filament like a string
Porter
many many of nanotubes
Porter
what is the k.e before it land
Yasmin
what is the function of carbon nanotubes?
Cesar
I'm interested in nanotube
Uday
what is nanomaterials​ and their applications of sensors.
Ramkumar Reply
what is nano technology
Sravani Reply
what is system testing?
AMJAD
preparation of nanomaterial
Victor Reply
Yes, Nanotechnology has a very fast field of applications and their is always something new to do with it...
Himanshu Reply
good afternoon madam
AMJAD
what is system testing
AMJAD
what is the application of nanotechnology?
Stotaw
In this morden time nanotechnology used in many field . 1-Electronics-manufacturad IC ,RAM,MRAM,solar panel etc 2-Helth and Medical-Nanomedicine,Drug Dilivery for cancer treatment etc 3- Atomobile -MEMS, Coating on car etc. and may other field for details you can check at Google
Azam
anybody can imagine what will be happen after 100 years from now in nano tech world
Prasenjit
after 100 year this will be not nanotechnology maybe this technology name will be change . maybe aftet 100 year . we work on electron lable practically about its properties and behaviour by the different instruments
Azam
name doesn't matter , whatever it will be change... I'm taking about effect on circumstances of the microscopic world
Prasenjit
how hard could it be to apply nanotechnology against viral infections such HIV or Ebola?
Damian
silver nanoparticles could handle the job?
Damian
not now but maybe in future only AgNP maybe any other nanomaterials
Azam
Hello
Uday
I'm interested in Nanotube
Uday
this technology will not going on for the long time , so I'm thinking about femtotechnology 10^-15
Prasenjit
can nanotechnology change the direction of the face of the world
Prasenjit Reply
At high concentrations (>0.01 M), the relation between absorptivity coefficient and absorbance is no longer linear. This is due to the electrostatic interactions between the quantum dots in close proximity. If the concentration of the solution is high, another effect that is seen is the scattering of light from the large number of quantum dots. This assumption only works at low concentrations of the analyte. Presence of stray light.
Ali Reply
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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Source:  OpenStax, Natural sciences grade 4. OpenStax CNX. Sep 18, 2009 Download for free at http://cnx.org/content/col11096/1.1
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