Exploring Physics Concepts

What is energy?

• Energy is a type of matter.

• Energy is the speed of light.

• Energy is the capacity to do work.

• Energy is a form of currency.

Name three forms of energy.

• Kinetic energy, potential energy, thermal energy

• Nuclear energy,

  Chemical energy,

  thermal energy,

  sound energy

• Chemical energy

• Sound energy

What is potential energy?

• Kinetic energy is the energy of motion.

• Potential energy is the energy of heat during a chemical reaction is the energy of motion..

• Potential energy is the energy stored in an object due to its position or state.

• Potential energy is the energy released during a chemical reaction.

What is kinetic energy?

• Kinetic energy is the energy of an object due to its temperature.

• Kinetic energy is the energy stored in an object at rest.

• Kinetic energy is the energy released during a chemical reaction.

• Kinetic energy is the energy of an object in motion.

How does light travel?

• Light does not travel; it is always present.

• Light travels in waves and particles (photons) at a speed of about 299,792 km/s in a vacuum.

• Light is a solid that moves slowly through space.

• Light travels only in straight lines.

What is the speed of sound in air?

• 400 meters per second

• 500 meters per second

• 343 meters per second

• 300 meters per second

What is a prism used for?

• A prism is used to refract light and separate it into colors.

• To create shadows, for human ability to help people to live

• To store light energy of big object

• To magnify small objects

What is the difference between reflection and refraction?

• Reflection is the absorption of light; refraction is the scattering of light.

• Reflection occurs only in water; refraction occurs in air.

• Reflection and refraction both involve the same process of light transmission.

• Reflection involves bouncing back of light; refraction involves bending of light.

What is magnetism?

• Magnetism is solely caused by the alignment of metal between two magnets only resulting in attractive objects.

• Magnetism is the attraction between two magnets only.

• Magnetism is a type of energy that can be harnessed for power.

• Magnetism is a force that arises from the motion of electric charges, resulting in attractive and repulsive interactions.

What materials are attracted to magnets?

• Gold

• Aluminum

• Silver

• Iron, nickel, cobalt