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Summary Grade 4 History Term 3 (Our World, Our Society) Summaries

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This product contains all the work for Social Sciences History Grade 4, term 3 – based on the “Our World, Our Society” textbook in English. Chapter 7: Transport through time: Unit 7.1: Transport on land over time Unit 7.2: Environmental damage: Exhaust fumes in a big city Unit 7.3: Transport on water Unit 7.4: Transport on air Packages usually include the following but may differ from product to product: Overview for the term including main points, keywords and short summaries / revision. Mind map per chapter / topic / term depending on the volume. Extensive bulleted summaries in colour with pictures and / or photos.

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Summaries after sample

, U7.4: Transport on air U7.1: Transport on land over time
• Early attempts at flight involved hot air balloons - they could only go up • Walking and animals.
and down and were easily blown off course by wind. • Carts (2 wheels) and wagons (4 wheels) were
• Airships were created by attaching engines to balloons filled with gases developed to be pulled by animals to transport
that were lighter than air. goods.
• The Wright brothers achieved the first powered flight in 1903 in North • Coaches were invented specifically for people.
Carolina, USA. • The bicycle - early versions had no pedals or
• Modern cargo planes - can carry up to 45 tons of goods. tires and were pushed by feet.
• Large aeroplanes - the Airbus 380 is the largest passenger plane. • Train - capable of moving massive amounts of
• Smaller aeroplanes - used for shorter distances and fewer passengers. goods and people across long distances.
• Helicopters - ideal for short distances, though they have a limited • The motor car - allowed people to live further
passenger capacity. from their workplaces and travel wherever they
• wanted.

Sample C7:
Transport
• High-speed rail.
• Public transport.

through time
Summaries after sample U7.3: Transport on water
• Simple rafts - made by tying logs or planks together with plant-based ropes.
U7.2: Environmental damage:
Exhaust fumes in a big city
• Canoes - the first built boats, used globally for thousands of years.
• Dug outs - made by hollowing out a tree trunk. • High levels of pollution in urban areas contribute
• Frame canoes - made by stretching animal hide or bark over a wooden frame. significantly to lung diseases.
• Reed boats – made from reeds. • Petrol fumes contain various bad gases categorised as
• Early ocean transport – Chinese junks, Arab dhows, Portuguese caravels, greenhouse gases, which trap heat in the atmosphere.
British tall ships and American clippers. • Exhaust fumes mix with water droplets in clouds to create
• Steamships - steam engines allowed boats to move even when there was no acid rain.
wind. • When this rain falls, it can damage plant life and poison the
• Modern forms of transport across water – oil tankers, container ships, ferries soil, disrupting local ecosystems.
and barges. • Trees act as natural filters by taking in carbon dioxide and
• - Modern forms of transport across water letting out oxygen - keeps the air clean.




GR4 SS-HIST T3-C7 Mind Map Our World, Our Society Copyright © www.summariessa.co.za (DO NOT COPY)

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