Quarter 3 - Science 6

Which of the following statements best describes friction?

• It is a force that occurs between solids.
• It is a force that occurs only on rough surfaces
• It is a force that occurs between solids and liquids.
• It is a force that occurs when surfaces touch each other.

Which of the following is an example of static friction?

• A book on top of a table
• Rolling a ball down a hill
• Pushing a car that is already in motion
• Trying to lift a heavy box off the ground

Which moves fastest on a flat surface?

• ball
• wooden box
• block of wood
• sheet of paper

Which scientist famously described the concept of gravity by observing an apple falling from a tree?

• Albert Einstein
• Galileo Galilei
• Isaac Newton
• Nikola Tesla

What is the unit used to measure force, including gravity?

• Ampere
• Joule
• Newton
• Watt

The energy produced by vibrating object is ____________.

• Electrical Energy
• Heat Energy
• Light Energy
• Sound Energy

If we burn a sheet of paper, energy is given off which we see as a flame or describe as a ____________.

• Electrical Energy
• Heat Energy
• Light Energy
• Sound Energy

Which form of energy is associated with the movement of electrons?

• Electrical Energy
• Kinetic energy
• Potential energy
• Thermal energy

What happens to the electrical energy in a circuit when a light bulb is turned on?

• It is converted into sound energy
• It is converted into thermal energy
• It is converted into mechanical energy
• It is converted into light and thermal energy

How does the energy transformation occur in a wind turbine?

• Kinetic energy to potential energy
• Mechanical energy to electrical energy
• Thermal energy to mechanical energy.
• Electrical energy to mechanical energy.