Natural Sci SA Grade 5- Unit 6 Frame and shell structures Term 1

Let's recap. Tick once each point has been read

• Vertebrae animals have backbones

• Invertebrae animals do not have backbones

• A structures is something that holds or supports

• A shell structure is curved and usually hollow inside

A frame structure

• is a structure made of pieces or strips of material joined together

• it supports or holds a shape

A building frame includes the

• wood, steel or concrete

• materials covering the frame eg. brick, corrugated iron or glass

• paint

The body frame is made up of

• bones joined together

• muscles covering the bones

• skin

• none of the above

An outside skeleton on some invertebrates are called a shell structure

• true

• false

Any invertebrate animal that has a hard outer skin, case or shell, like the crab, wears its skeleton on the inside.

• True

• False