L2 Scientific Principles Part 3

Metals that contain iron are know as?

• Pure metals

• Ferrous metals

• Alloys

• Non Ferrous metals

Brass is a mixture of?

• Copper and Tin

• Copper and Zinc

• Copper, tin and Zinc

• Iron and Carbon

Gunmetal is a mixture of?

• Copper and Tin

• Copper and Zinc

• Copper, tin and Zinc

• Iron and Carbon

Weight is the force of gravity pulling on a mass and is?

• 1 kg = 10N (9.81N)

• 10 kg = 10N (9.81N)

• 100 kg = 10N (9.81N)

• 0.1 kg = 10N (9.81N)

Weight is a force, it is measured in?

• KG

• Newtons

• Grams

• Pounds

To find the density of an object, use the following formula

• density = mass / volume

• volume = mass / density

• density = mass + volume

• density = mass - volume

Relative density is when we compare the mass of material. Water has a relative density of?

• 1

• 2

• 0.1

• 10

Relative density is when we compare the mass of material. Air has a relative density of?

• 1

• 2

• 0.1

• 10

Tensile strength: how strong is it when it is?

• stretched or pulled

• crushed

• forces are opposing

• How much can a material be pulled, pushed or stretched without breaking

Compression strength: how strong is it when it is?

• stretched or pulled

• crushed

• forces are opposing

• How much can a material be pulled, pushed or stretched without breaking