6th TCAP Diagnostic Test 2

Why are most metals good conductors?

• Metals are shiny

• Metals are flexible

• Metals have a hard, slick surface

• Some electrons easily detach from metals

Which of these is the best insulator?

• copper

• rubber

• the ground

• water

A tightrope walker has

• chemical potential energy

• elastic potential energy

• gravitational potential energy

• nuclear potential energy

If the tightrope walker falls, a net will catch him. As he falls,

• his potential energy is converted to kinetic energy

• his potential energy is converted to gravity

• his potential energy will transfer to the net

• his potential energy doubles

The net under a tightrope walker stretches when he falls into it. The net has

• chemical potential energy

• elastic potential energy

• gravitational potential energy

• nuclear potential energy

Which energy transformation happens as a car burns gasoline?

• chemical to nuclear

• nuclear to mechanical

• chemical to mechanical

• mechanical to electrical

A roller coaster reaches the bottom of a hill. What percent of its energy is kinetic and what percentage is potential?

• 100 percent kinetic energy, 0 percent potential energy

• 100 percent potential energy, 0 percent kinetic energy

• 50 percent kinetic energy, 50 percent potential energy

• 75 percent kinetic energy, 25 percent potential energy

Plucking the strings of an electric guitar could also be described as converting

• kinetic energy into potential energy

• light energy into mechanical energy

• mechanical energy into sound energy

• potential energy into kinetic energy

Some squid have the ability to glow in the dark. In other words, a squid can change

• chemical energy into light energy

• heat energy into electrical energy

• electrical energy into heat energy

• electrical energy into light energy

Which biome is known for very hot days with cook nights and soil that is poor in humus but rich in minerals?

• deciduous forest

• desert

• tundra

• savanna