Science 4 Mrs/Abeer samir

Sand is formed from breaking down

• Rocks

• Acid

• Minerals

Lichnes produce

• Acids

• Rock

• Water

Break down rocks into small pieces

• Weathering

• Erosion

• Deposition

Most energy chains start with

• Moon

• Sun

To move a bike we need gasoline

• True

• False

Delta is formed by weathering process

• True

• False

Sand dunes are formed by

• Erosion only

• Erosion and deposition

• Deposition only

Lowland area has gently sloped sides

• Canyon

• Valley

• Dunes

Non renewable sources of energy

• Oil

• Gasoline

• Coal

• Natural gas

• Biofuel

Device used to convert electric energy into light energy

• Electric lamp

• Fan

• Battery