Materials
What are three natural materials?
Rubber, rocks, metals, wood
How hard or soft something is.
What is one thing we can make from wood?
furniture, pencils, paper, etc.
Name the three states of matter.
Solids, liquids, gases
How do you find density?
Divide mass/ volume.
What are three synthetic materials?
Polyester, plastic, nylon, foam
What is the difference between compressive and tensile strength?
Compressive strength is how much a material can be squeezed (or PRESSed) before it breaks. Tensile strength is how much a material can be pulled apart before it breaks.
Is glass a synthetic or natural material?
Synthetic
Matter has these two things.
Mass and volume.
What is the density of water?
1.00 g/cm3
Can a synthetic material be found in nature?
No, a synthetic material is made by humans.
What is transparency?
A material's ability to allow light to pass through it.
What is metal used to make?
Nails, nuts, bolts, cutlery, machinery, tools, etc.
What is mass?
How much matter an object has.
What is buoyancy?
The ability of an object to float or sink in a liquid.
Materials that come from both living and non-living things in nature are called what?
Natural materials.
What is the difference between flexibility and elasticity?
Flexibility is a measure of how much an object can bend and return to its original shape without breaking. Elasticity is an object's ability to return to its original shape after being stretched or squeezed.
From rubber trees in the form of latex.
What is volume?
How much space an object takes up.
Tell me one thing that floats and one thing that sinks in water.
***x2 points***
answers will vary
What is a physical property? (the definition, not an example)
A physical property is something about a material that you can observe using any of your five senses.
What is the difference between heat/ electrical conductivity and insulation?
Conductivity allows heat and electricity to move through an object, insulation does not allow heat or electricity to move though an object.
Where does ceramic come from?
It's a natural material that comes from clay and other types of soil.
Tell me about the particles in each state of matter (solids, liquids, gases)
***x3 points***
The particles in solids are packed very close together and cannot move.
The particles in liquids are free to move past each other which means liquid can flow.
The particles in gases are widely spaced out and free to move in any direction.
The freezing and melting point of water is this temperature.
O degrees Celsius.