Structures and Forces Topics 1-2

Topic 1

100

Structure

A structure is any object with a definite size and shape which serves a purpose.

200

Origin

Origin describes where a structure came from

300

Structural ______ is a structure’s ability to keep it's shape when forces act on it. Structural _____ Stability is a structure’s ability to hold it's position when forces act on it.

the first blank is strength the second is stability

400

Natural Structures and two examples

Natural structures are made by, or part of, plants or animals. It is not made by humans. Examples: trees, beehive, beaver dam, caves

500

Manufactures Structures and two examples

Manufactured structures are made by humans. Examples: Buildings, houses, pencils, desks

Topic 2

100

Three ways to join a structure together

adhesive, welding, friction

200

2 of the three ways friction hold things together

fasteners, interlocking pieces, mass

300

What is a nicer way of asking someone to stop talking rather than saying shut up?

Can you please be quiet? 

400

One way to improve a material's strength

corrugation, lamination, weaving

500

_______ is the process of tying together pieces of a flexible material like string

weaving/knitting 

Topic 1&2

100

A _____ structure is formed from a solid outer material that creates a large hollow inner space.

shell

200

Design 

Design is the shape and size of a structure.

300

Margin of safety

Margin of safety means that a structure should be designed and built to perform as expected.

400

Aesthetics

Beauty in a designs structure

500

function

Function is a structure’s purpose.

Topic 1

100

Examples of structures that are strong but not stable

Chair Some trees Baseball Basketball Baseball bat

200

Examples of structures that are stable but not strong

Some chairs Waterbottle Hand sanitizer dispenser Toys Phones Erasers, cake, tent

300

Frame structure

A frame structure is formed from pieces that have been joined together to create a skeleton of support.

400

Form

Form describes the way that a structure is made

500

Solid Structure

A solid structure is formed from solid pieces of a strong material that are piled on top of each other.

Topic 2

100

Friction

Friction is the force that results when the surface of one object moves against the surface of another object. Friction can help hold the pieces of a structure together.

200

2 examples of friction

Fasteners such as nails and screws Interlocking pieces such as Lego Mass creates weight that holds parts together

300

Movable joints and two examples

Movable joints Movable joints can move. Examples: door hinges, shoulders, drawers or wheels

400

A _____ is any place where two different parts of a structure have been joined together.

Joint

500

Fixed joints and 2 examples

Fixed joints Fixed joints do not move. Examples: welds, cement, glue, or nails