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WHICH FACTOR IS BIOTIC ELEMENT OF AN ARCTIC TUNDRA?

• STRONG WIND
• COLD TEMPERATURE
• SNOWY OWL
• FROZEN SOIL

WHICH BEST EXPLAINS WHY COLD-WATER CURRENTS FLOW BENEATH WARM-WATER CURRENTS?

• COLD WATER IS MORE DENSE THAN WARM WATER
• COLD WATER HAS LESS POLLUTION
• WARM WATER HAS MORE OXYGEN
• WARM WATER HAS MORE POTENTIAL ENERGY THAN COLD WATER

THE ENERGY OF A BOW CHANGES WHEN THE STRING IS PULLED BACK.
WHICH CHANGE WILL OCCUR IN THE BOW AFTER THE STRING IS RELEASED?

• NUCLEAR POTENTIAL ENERGY IS RELEASED
• ELASTIC POTENTIAL ENERGY WILL DECREASE
• CHEMICAL POTENTIAL ENERGY WILL INCREASE
• GRAVITATIONAL POTENTIAL ENERGY WILL INCREASE

THE MOVEMENT OF AIR IN A CIRCULAR PATTERN IS A RESULT OF

• THE WAVES PUSHING AGAINST THE LAND
• THE SUN HEATING THE LAND AND WATER DIFFERENTLY
• WATER EVAPORATING FROM PLANT LEAVES
• PARTICLES OF POLLUTION ENTERING THE AIR

IF IT IS WINTER IN THE NORTHERN HEMISPHERE, IN SIX MONTHS, WHICH SEASON WILL BEGIN IN THE SOUTHERN HEMISPHERE?

• FALL
• SPRING
• WINTER
• SUMMER

A CIRCUIT CONTAINS A BATTERY, WIRES AND A BUZZER THE DIAGRAM REPRESENTS THE ENERGY TRANSFORMATION THAT OCCUR IN A CIRCUIT chemical energy-->?-->sound energy.
WHICH TYPE OF ENERGY IS NEEDED TO COMPLETE THE DIAGRAM?

• GRAVITATIONAL ENERGY
• LIGHT ENERGY
• ELECTRICAL ENERGY
• HEAT ENERGY

WHEN A LAMP IS TURNED ON, ONLY 10% OF THE ENERGY IS TRANSFERRED INTO LIGHT. WHAT HAPPENS TO THE REST OF THE ENERGY?

• DESTROYED
• ENERGY THAT IS NOT TRANSFORMED INTO LIGHT BECOMES THERMAL ENERGY
• CHANGED INTO SOLID MATTER
• ENERGY IS RECYCLED BACK INTO THE ELECTRICAL CIRCUIT

THE BLADES OF A WIND TURBINE ARE MOVING. THE WIND THAT MOVES THE BLADES IS CAUSED BY

• DENSITY CURRENTS GENERATED IN THE OCEANS
• ATMOSPHERE BEING HEATED UNEVENLY
  
• FORMATION OF CUMULUS CLOUDS
  
• BUILDUP OF GREENHOUSE GASES

WHICH BEST DEMONSTRATES A TRANSFORMATION OF CHEMICAL ENERGY INTO MECHANICAL ENERGY?

• A MARBLE ROLLING DOWN A TRACK
• A LANTERN BURNING FUEL
• A MATCH LIGHTING A CANDLE
• A MOTORCYCLE USING GASOLINE

A NEW ORGANISM HAS BEEN DISCOVERED IN AN ISOLATED FOREST AREA. THIS NEW ORGANISM IS MULTICELLULAR AND RECEIVES NUTRITION FROM DEAD TREES. HOW WILL THIS ORGANISM MOST LIKELY BE CLASSIFIED?

• PRODUCER
• DECOMPOSER
• SCAVENGER
• PREDATOR