Resistance
This material does not break easily when weight is added.
Strong
This material can bend without breaking.
Flexible
This surface is flat and even to the touch.
Smooth
This material weighs very little.
Light
This material comes from plants, animals, or the Earth.
Natural
This material is difficult to scratch or dent.
Hard
This material cannot bend at all.
Rigid
This surface feels uneven or bumpy.
Rough
This material has a lot of weight.
Heavy
This material has been changed by humans.
Processed
This material breaks or snaps suddenly.
Brittle
This material stretches and returns to its shape.
Elastic
This surface has little resistance, feels nice and is easy to compress.
Soft
This material floats on water.
Buoyant
This material is made from oil or chemicals.
Synthetic
This material lasts a long time, even with heavy use.
Durable
This material bends under force but snaps if bent too far.
Brittle
This surface does not let liquid pass through.
Waterproof
This material sinks in water.
Dense
This material can be used again to make new products.
Recyclable
This object can be damaged easily if dropped.
Fragile
This material bends but does not return to its original shape.
Malleable
This surface allows water to pass through it.
Porous
This word describes how much matter is in an object, even if gravity changes.
Mass
This material breaks down naturally over time.
Biodegradable