2nd 9 Weeks Science Review Created and modified 1/3/2012 By: C. Horejsi

The glacier moves down the valley and causes erosion and wearing away of the rock and soil underneath the ice.

Constructive – build up of sand Destructive – wearing away

Resources in Review What are resources? Resources are things people use. Can you name some resources: wind, water, soil, trees, animals, oil, fossil fuels, solar energy, minerals, rocks, food, electricity, plastic, and many other items.

The most abundant natural resource on Earth 97% is NaCl H20 Can you restate this claim?

Renewable, Nonrenewable, or Inexhaustible Classify the following:

Fossil Fuels Non-renewable resources – it takes millions of years to make

Types of Fossil Fuels CoalOilPetroleum Natural Gas

EOPLE, PLANTS NIMALS ITROGEN RINKING WATER IR (ATMOSPHERE) OXYGEN – CARBON-DIOXIDE OIL

Soil Types Silt-fine, rich ingredients, moved from some other place Sand-grainy, mixture Potting Soil – Large particles Clay- tiny particles, retains moisture Sedimentary Layers Loam is a mixture of Clay, Silt, & Sand

Sedimentary Rock Layers Which layer is the oldest?

Earth’s Resources S.H.E.L Fossil Fuels S.O.W. & Minerals

? [Online Imagehttp:// Downloaded February 4, 2007.

A Sediment Display

Inexhaustible Resources: U N C E A N TIDES I N D eothermal heat

EOPLE, PLANTS NIMALS ITROGEN RINKING WATER IR (ATMOSPHERE) OXYGEN – CARBON-DIOXIDE OIL

Fossil Fuels Non-renewable resources – take millions of years to make. Made from the remains of living organisms – such as plants and animals.

Takes millions of years to make – cannot be replaced in our life time.

Types of Fossil Fuels CoalOilPetroleum Natural Gas

m ountains eather From Water, Wind, & Ice V U

MAGNETS have 2 poles

Electric currents