X-tra Credit Anyone?

The two type of mechanical energy are:

• radiant/solar

• potential/kinetic

• gravitational/

  elastic

• chemical/thermal

If the speed of a vehicle increased by 30 mph, its kinetic energy increased by:

• 900 joules

• 90 joules

• 9 joules

• 30 joules

The independent variable is commonly called the ______ variable.

• responding

• controlled

• constant

• manipulated

If I wanted to compare the sales of different brands of tennis shoes, I use a _____ graph to show it.

• bar

• line

• circle

• histogram

Any energy given from objects that illuminate (give off light) is known as ______ energy.

• mechanical

• chemical

• radiant

• solar

One way to increase the potential energy of an object is to increase the object's:

• mass

• speed

• density

• conductivity

Slingshots and bows will have this form of energy:

• solar

• thermal

• chemical

• elastic

As organisms, that were once living decompose under high pressure and temperature conditions, these can form, which takes millions of years.

• bacteria

• fossil fuels

• nitrogen molecules

• decomposers

The scientific name for decomposers is:

• detritivores

• consumers

• autotrophs

• apex predators

If the mass of an object increased 345 g, its kinetic energy increased

• 34.5 joule

• 345 joules

• 119,025 joules

• .345 joules