Obtaining & use of Rocks

Q1. Earth is a huge ball of _____________.

• 
• 

Q2. _____________can be dug from open pits.

• gravel

• minerals

Q3. _____________ is used for the making of roads and railway tracks.

• minerals

• aggregate

Q4. _________is the process of digging valuable rocks.

• aggregate

• mining

Q5. Sand and gravel pits can be __________.

• harmless

• dangerous

Q6. Mosques, gravestones are the examples of ______ rocks.

• natural

• artificial

Q7. Lead in pencil is also known as __________.

• graphite

• diamond

Q8. Coal, oil and natural gas are NOT fuels?

• yes

• no

Q9. ______is are pieces of rock that came from volcanoes.

• emeralds stones

• pumice stones

Q10. Cement and concrete are the examples or _____ rocks.

• man-made

• artificial