Needs

Reasons Why People InventBy Ansley Jackson

Introducing needs needsNeeds are the main reason people invent. There are lots of ways needs are usefulThere are three different kinds of needs.Economic needsMilitary needs And social needs

Economic needsMost inventions come from economic needs. Economic needs use lots of machines and devices. Economically successful Inventions may create an economic need for additional inventions. For example clothes went from being sewed by hand to being sewed by machines. Those machines are called sewing machines.

Economic InventionsEconomic inventionsThere are tons of inventions that are in the economic section likeFARMING TOOLS!Farming toolsThe rakeA hoseHammersAnimal feedTractorsfertilizerEconomic business and industriesHere are some simple examples..

ComputersIntercomsCarsVideo cameras

Economic needs in agricultureHere are some examples of agriculture we use every day!Farming tools likeTractors a Plower

Tractors are used a lot.

Military needsWar and threats of war have normally simulated inventions. When nations are at war it encourages inventors, engineers, and scientist to create weapons that are stronger and more powerful. Many inventions have lead to war and peace. World War II has simulated more research and inventions such as the atomic bomb.

Social needsSocial needs have brought thousands of inventions and discoveries. Lots of inventions and discoveries have eased threats to health. Others have made life easier. lots of inventions have helped in battles such as vaccines to prevent poliomyelitis.

Types of social needsHypodermic syringeVacuum cleanersCanned foods

Reasons why people inventThey hope to make moneyTo satisfy their curiosity

Reasons why people invent slide 2To satisfy othersUrge to create

Reasons people invent slide 3Improvements!

The End!Thanks for watching!

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