Technology

Sixth Grade

2nd Trimester 2014-2015

What is Technology?

Technology is the use of natural resources to create items to help satisfy human needs and/or wants

Provides us with most of the things we use in our society

Used in all of the products, inventions, and discoveries made by people

Technology Around Us

Look around… what sorts of technology do you see in this room?

Kinds of Technology

Communication technology- includes computers, cell phones, DVD Players

Transportation technology- includes cars, commuter trains, planes, buses, bicycles

Biotechnology- uses elements of biology (the study of living things) to create products. Examples include cereals and vitamins.

Manufacturing technology- includes things made in factories

Construction technology- includes houses bridges, skyscrapers, school buildings, etc.

Through the years

Technology continues to improve as years go onComputers used to be the size of the

classroomNow we have super thin tablets and cell

phones that have more memory and storage space than those first computers

What other sorts have technology have changed over time? In what ways?

Examples can include phones, cars, buildings, etc…

Technologically literate

To be technologically literate means to be comfortable using technology

You are not afraid of itYou also understand that sometimes it

won’t work the way you want it to

Isaac Newton

A Brief History of his life and work

Isaac Newton- A Brief History

Lived from 1642-1727Was a mathematician and physicistConsidered to be one of the greatest

scientific minds of all timeFormulated laws of motion

Explains how objects move on Earth and in the heavens

Additional Facts about Newton

Created the modern study of opticsBuilt the first reflecting telescope Insights in math led him to create the area

of math called calculusUsed his mathematical theories to explain

how he believed the physical world worked

Experiments he conducted- Gravity

Observed his Laws of Motion and gravity in natureInspired (according to legend) by watching an

apple fall in an orchardResults of this study led him to believe that

the same force of gravity that pulled the apple to the ground was also what keeps the moon in orbit

Gravity

the force of attraction by which terrestrial bodies tend to fall toward the center of the earth. (http://www.dictionary.com)

Meaning that whatever goes up must eventually come down since it is being pulled downward by force of gravity

Laws of Motion

It was during Newton’s scientific experiments that he developed what we know as Newton’s Three Laws of Motion.

Ideas such as inertia, force, and gravity are discussed in these laws

1st Law of Motion

“An object at rest tends to stay at rest and an object in motion tends to stay in motion with the same speed and in the same direction unless acted upon by an unbalanced force.”

This often refers the concept of inertia Inertia: the resistance an object has to a

change in its state of motion.

2nd Law of Motion

This law refers the amount of force on an object

Force: a push or a pull upon an object which results from its interaction with another object. In general, Force is equal to the amount of mass of an object times the acceleration or F=m *a

Force is measured in a unit called a newton

Force

ExampleA 2 Kg pineapple falls from the roof of OLH,

accelerating toward the blacktop at a rate of 5 m/s. Assuming that F=m*a, we can calculate the force as:

F= 2Kg * 5 m/sForce = Newtons

Force of Gravity

Let’s say we drop our 2 kg pineapple again (the poor abused pineapple somehow survived the first drop), and is now accelerating at the force of gravity on Earth which is 9.8 m/s. What force does it land at?Remember F=m*a

3rd Law of Motion

For every action, there is an equal and opposite reaction.

Often involves action and reaction forces The size of the first force equals the force

on the second object.Forces always come in pairs- equal and

opposite action-reaction force pairs.

3rd Law Continued

What does this mean?Example: When you sit in your chair, your

body exerts a downward force on the chair and the chair exerts an upward force on your body. There are two forces resulting from this interaction - a force on the chair and a force on your body.

Sitting on the chair is the action, the chair putting forth the upward force is the reaction.