Unit 6 Forms of Energy

Which object is the best conductor of electricity?

• A Ceramic Mug
• A plastic fork
• a penny
• a wooden craft stick

What form of energy is being used when a person pushes heavy boxes across the floor?

• electrical energy
• mechanical energy
• heat energy
• sound energy

You are taking a cold soda on a field trip.  You must choose from four containers in which to carry the soda.  The four containers are made of different materials.  Which container will most likely insulate the soda best?

• Aluminum
• copper
• glass
• plastic

Which form of energy is produced when a guitar string vibrates?

• sound energy
• electrical energy
• chemical energy
• light energy

A student wanted to see how his toy car would roll on different types of flooring.  He decided to roll the car on a tile floor, a wood floor, and a carpeted floor.  His experiment was designed to test the effects of which of the following forces?

• gravity
• gravity and magnetism
• magnetism and friction
• friction

Which of the following materials are good conductors of heat, sound, and electricity?

• water
• glass
• copper
• wood

All of the following materials are examples of thermal energy EXCEPT the energy produced by

• rubbing your hands together
• a hot plate boiling water
• plugging in a portable radio
• burning wood in a fireplace

Which of the following is the best example of a student using electrical energy?

• using scissors to cut a piece of yarn
• writing down the homework assignment
• knocking on the classroom door
• turning on the light in the classroom

Which of the following is an important safety practice during a lab investigation of thermal energy?

• making sure your hands are dry when plugging in a sound recorder
• Using insulated gloves when handling heated beakers
• Remembering not to look directly at the Sun while investigating shadows
• Informing the teacher of a broken graduated cylinder

Which forms of energy from the Sun reach the earth?

• light and mechanical
• thermal and electrical
• light and thermal
• mechanical and thermal