Third Periodical Test in Science 6

The energy produced by vibrating object is _____.

• Sound Energy

• Heat Energy

• Light Energy

• Electrical Energy

When food or liquids become hot, their molecules absorb energy, begin vibrating rapidly, and start to bounce off each other. As they collide, energy is produced and transferred, which warms and cooks our food. What form of energy is described?

• Sound Energy

• Heat Energy

• Light Energy

• Electrical Energy

If we burn a sheet of paper, energy is given off which we see as a _____.

• Sound Energy

• Heat Energy

• Light Energy

• Electrical Energy

When heat is released from fuel and boils the water to make steam, it turns the turbine which turns the generator. This will produce _____.

• Sound Energy

• Heat Energy

• Light Energy

• Electrical Energy

Which energy transformation occurs in an electric iron?

• Heat to Light

• Light to Heat

• Heat to Electricity

• Electricity to Heat

Rubbing two pieces of wood together can produce heat and later turn into another form of energy.

• Sound Energy

• Heat Energy

• Light Energy

• Electrical Energy

Many appliances you use every day change electrical energy into other forms. When you use a toaster to toast bread, electrical energy is changed to _____ and _____.

• Heat and Sound

• Heat and Light

• Light and Sound

• Heat and Nuclear

When you lighted a lamp or candle, the chemical energy of the lamp is changed into light energy, and at the same time it can produce _____.

• Heat

• Sound

• Electricity

• Chemical

When you plugged a transistor radio in an electrical outlet and switch on the power button, automatically the electrical energy is turned to ____.

• Heat Energy

• Light Energy

• Sound Energy

• Radiant Energy

If you use some appliances, you observe that after few minutes, electrical energy is always produced ____.

• Light Energy

• Sound Energy

• Heat Energy

• Mechanical