Nova Treasures of the Earth Metals

What property of metals allows them to be hammered into thin sheets without breaking?

• Brittleness

• Ductility

• Malleability

• Transparency

What is the process of extracting metals from their ores called?

• Extractionism

• Oreology

• Metalloextraction

• Metallurgy

Name one common use of copper, an earth metal.

• Cooking utensils

• Electrical wiring

• Agricultural tools

• Jewelry making

Which earth metal is the most reactive and can react vigorously with water?

• Francium

• Potassium

• Lithium

• Sodium

What are alloys and how are they different from pure metals?

• Alloys are less durable than pure metals.

• Alloys are pure metals with no added elements.

• Alloys are mixtures of two or more metals, or a metal and a non-metal, with enhanced properties compared to pure metals.

• Alloys are made by mixing metals with water.

What property of metals allows them to be drawn into wires?

• Ductility

• Magnetism

• Transparency

• Hardness

What is the primary use of iron, an earth metal?

• Used in making glass

• Primary component in batteries

• Main ingredient in plastic production

• Production of steel

Which earth metal is commonly used in batteries due to its reactivity?

• potassium

• lithium

• sodium

• calcium

What is the process of combining two or more metals to create a new material called?

• Mixing

• Alloying

• Fusing

• Blending

Name one alloy of earth metals commonly used in the aerospace industry.

• Aluminum alloy

• Titanium alloy

• Copper alloy

• Magnesium alloy