Question 1

A solid  material l found in the ground that is made of elements is a ..................

Accepted Answer

mineral

Question 2

Rocks change from one type to another over time in a process called the .............. ...............

Accepted Answer

rock cycle

Question 3

A ........................... rock forms in layers

Accepted Answer

sedimentary

Question 4

Soil is divided into three .......................

Accepted Answer

horizons

Question 5

The harmful addition of materials to soil, air, or water is called .................

Accepted Answer

pollution

Question 6

The remains of ancient organisms in rock are ...............

Accepted Answer

fossils

Question 7

A unit of time that is measured in millions of years is an ........

Accepted Answer

era

Question 8

The way a mineral reflects light is called its .......................

Accepted Answer

luster

Question 9

A layer of gas that surrounds Earth and protects living things from the Sun is the ....................

Accepted Answer

ozone

Question 10

What type of rock forms when lava from a volcano hardens?

Accepted Answer

igneous

Question 11

A type of pollution caused by particles in the air is called ...................

Accepted Answer

smog

Question 12

Which of the following is a type of fossil fuel

Accepted Answer

anthracite

Answer

solar

Answer

geothermal

Answer

biomass

Question 13

Magma or lava that has cooled and hardened

Accepted Answer

igneous

Question 14

Rock formed by bits of sand, dust, shells and soil

Accepted Answer

sedimentary

Question 15

Rock formed by other rocks that are changed by heat and pressure

Accepted Answer

metamorphic

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