Gold

Fruit from this area has a characteristic taste...

• tart

• refreshing

• distinctive

• peculiar

Where can the hoard be hidden?

• ore

• supply

• artifact

• jewelry

This metal will not corrode...

• expand when heated

• become molten

• transmit electricity

• gradually wear away

The men came to extract the silver.

• take out

• export

• look for

• inspect

A large company wants to exploit the copper found in the region.

• locate

• identify

• make use of

• experiment with

The smell of gas engulfed the town.

• transformed

• disturbed

• injured

• overwhelmed

Ancient Persians and Egyptians most likely extracted gold using the same method as...

• South African mining companies in the twentieth century.

• "Forty-niners" in California in the mid-nineteenth century.

• Spanish invaders of South America in the sixteenth century.

• American and Canadian gold prospectors of the twenty-first century.

Gold is used to produce the lines that connect astronauts to space vehicles and space station because it...

• will not corrode

• melts at a high temperature

• is very dense

• is a good thermal conductor

Which of the following methods of extracting gold happened first in history?

• taking gold out of seawater

• panning for gold

• blasting gold out of rock

• dissolving gold from rocks

One reason that gold has always been treasured is that it...

• does not lose its shininess over time.

• is often combined with silver.

• has an unusual arrangement of atoms.

• is an excellent electrical conductor.