Energy webquest

Energy webquest

Open Ended

Have you ever seen volcanic activity of any sort, if so describe it.

Poll

water boils at 100 degrees Celsius. Think about how long it takes a kettle to boil a liter of water. Compare this to the volume of lava produced during the eruption of Kilaeuea ,which covered an area of 442 acres or 144 square kilometer, energy that must have been required to produce that amount of lava.What does this tell you about the energy stored in the Earth?

• lots of energy stor

• a little energy stored

• what energy

Energy

• energy is a property of an object that allows it to do work.

• it can be transferred between objects and systems

• and transformed into different forms

energy

• The amount of energy in a closed system is the same before and after a transformation

• energy is measured in joules.( J)

• 
  

energy

one simple way of measuring the energy in a system or energy transferred between objects is to measure the temperature or change in temperature. a thermometer measures the average energy of molecular motion in an object or system ( average kinetic energy) shown as the temperature of the system. the amount of substance in an object ( its mass) is also important in determining the amount of energy in the object.

energy

for example 100 liters of water at 30 deg C. has much more energy stored in it than 1 liter of water at 30 deg C even though there temperatures are the same.

Developing understanding of energy

in particular how much energy is stored by certain objects or systems, the next slides I want you to google the equivalent use of 10,000 J of the five following substances.

Open Ended

How long it takes a 100 watt light bulb to use 10,000 J of electrical energy?

Open Ended

How much 10,000 J will raise the temperature of 1 liter of water by, tel me the answer in degreees Celsius.

Open Ended

What volume of gasoline stores 10,000J of energy ( in mL)

Open Ended

what mass of table sugar ( sucrose) stores 10,000J of energy ( in grams)

Open Ended

The speed in meters per second ( m/s) of a 145 gram baseball that has 10,000 J of kinetic energy

Open Ended

list four diffrent types of energy that are commonly used in everyday language.

Open Ended

A cup of hot water cools down over time. Where do you think the energy that was in the water went?