SCIENCE 3 - UNIT 9 - MACHINES

SCIENCE 3. UNIT 9

MACHINES

Page 126.

1st Copy and complete the sentences.

a. An inclined plane is used to move objects up and down different levels.

b. A lever uses a rigid bar and a fulcrum to lift objects.

c. A pulley uses a rope and a wheel to lift heavy objects.

d. A screw is an inclined plane around a shaft.

Page 127.

2^nd Find an example of a pulley in your classroom.

An example of a pulley in my classroom is the blinds.

3^rd Identify the simple machines that make up a pair of scissors.

A pair of scissors is made up of two levers and two wedges.

Page 128.

1^st Which tool do we use to turn screws? And bolts?

We use a screwdriver to turn screws.

We use a spanner to turn bolts.

Page 132.

1^st Copy and complete.

Machines can be		Tools
simple	complex
are made up of few or no moving parts	are made up of simple machines	help us make things and take things apart
wheel and axle screw pulley inclined plane lever and fulcrum wedge	computer lorry car TV phone bicycle clock watch	screwdriver spanner nuts and bolts hammer saw screws

Page 133.

1^st Identify the simple machines in the picture.

A. a pulley

B. an inclined plane

C. a wedge

2^nd Copy and complete the sentences.

a. Simple machines have few or no moving parts. When you put them together you get a complex machine.

b. We can use a pulley to lift a heavy box up to a high window.

c. We can use a screw to attach the legs to a table.

3^rd Look at the pictures and say which tools you need to complete the job.

A. a spanner

B. a screwdriver

C. a saw

SCIENCE 4. UNIT 12. HISTORY

SCIENCE 4. UNIT 12

HISTORY

La Ñora, Thursday May 28th 2015.

Page 137.

1st What is History?

History is everything that happened in the past.

2nd Why is History important?

History is important because we can learn from the past.

3rd Look at the photos a-e. Order the historical sources from the oldest to the most recent.

b à e à a à c à d

4^th Match and write the sentences.

a. A year is made up of twelve months.

b. A decade is made up of ten years.

c. A century is made up of one hundred years.

d. A millennium is made up of one thousand years.

6^th Order the five main periods of History from the earliest to the most recent.

Prehistory à Ancient History à Middle Ages à Modern Age à Contemporary Age

7^th Which period do you think we know the least about? Why?

We know the least about Prehistory because it was about two million years ago.

8^th Can you match the historical sources in photos a-e to the periods of History?

b à e à a à c à d

b à Prehistory

e à Ancient History

a à Middle Ages

c à Modern Age

d à Contemporary Age

Page 138.

1^st What is prehistory?

Prehistory is the period from when the first humans existed about two million years ago, until the invention of writing.

2^nd What are the two main periods of prehistory?

The two main periods of prehistory are Palaeolithic period and Neolithic period.

3^rd Look at the pictures of the Palaeolithic period and the Neolithic period. Copy the chart and classify the differences between them.

Palaeolithic period	Neolithic period
people were nomads no domestic animals simple tools stone, wood and bones	people started to: * live in one place and form communities * grow crops * keep domestic animals complex tools stone and metal

Page 139.

2^nd Name three things that people in the first civilisations did.

People in the first civilisations lived together in communities and didn’t have to move from place to place to find food and shelter.

Page 140.

1^st What were the four groups of Christians in the Middle Ages?

The four groups of Christians in the Middle Ages were nobles, clergy, craftsmen and merchants, and peasants.

4^th What religious buildings did the Christian and Islamic civilisations build?

The Christian civilisation built religious buildings such as churches and cathedrals.

The Islamic civilisation built religious buildings such as mosques.

Page 141.

1^st Copy and complete the sentence.

The Modern Age was a time of discovery and scientific invention.

2^nd Why were the compass and accurate maps important to the Modern Age?

Because meant that people could travel to new places without getting lost, and discover new lands and new products.

3^rd Where did Columbus want to travel?

He wanted to travel to Asia.

4^th Why did more people learn to read in the Modern Age?

Because Gutenberg’s printing press was invented.

Page 142.

2^nd Copy the chart and classify these inventions of the Contemporary Age.

Inventions in medicine	Inventions in communication
x-ray vaccinations	radio telephone

Page 146.

1^st Copy and complete the word map.

	History
Palaeolithic period	Prehistory	Neolithic period
Roman civilisation	Ancient History
Islamic civilisation	Middle Ages	Christian civilisation: -nobles -clergy -craftsmen and merchants -peasants
scientific invention	Modern Age	discovery
changes in society	Contemporary Age	industry

2^nd Use the word map to copy and complete the sentences.

a. Palaeolithic / Neolithic

b. Roman

c. Islamic / Christian

d. discovery / invention

e. changes in society / industry

3^rd Copy and classify the sentences about the periods of prehistory.

Palaeolithic period	Neolithic period
b d	a c e

4^th Copy and complete the sentences about the Roman civilisation.

a. amphitheatres

b. roads

c. bridges

d. aqueducts

5^th Copy and complete the sentences about the Middle Ages.

Romans / Muslims

6^th What invention of the Modern Age meant that it was quicker and cheaper to produce books and maps?

Gutenberg’s printing press

7^th Write four important scientific inventions of the Contemporary Age.

Four important scientific inventions of the Contemporary Age were:

-     X-ray

-     Vaccinations

-     The radio

-     The telephone