Physical Science Georgia Milestones

What does the iron core of an electromagnet do?

• It acts as a conductor, allowing more current to flow through the electromagnet

• It acts as an insulator, protecting people from electric shocks

• It produces a magnetic field that adds to the overall magnetic field of the electromagnet

• It produces the electric current that passes through the wire coil.

An engineer built a device. The main part of the device is a bicycle attached by wires to a light bulb. When the engineer pedals the bicycle, the light bulb lights up. How can the device best be classified?

• as a motor

• as a generator

• as an electromagnet

• as an armature

Four objects are on a shelf 1.5 meters above the ground: a 350 gram trophy, a 100 gram picture frame, a 225 gram book, and a 600 gram vase. Which object has the most potential energy?

• book

• vase

• trophy

• picture frame

Tags

NGSS.MS-PS2-4

Which of the following is a form of potential energy?

• sound energy

• chemical energy

• thermal energy

• mechanical energy

Tags

NGSS.MS-PS3-2

Which of the following is the best example of a form of kinetic energy being transformed into a form of potential energy?

• During photosynthesis, plants use light from the sun to build sugar molecules

• During combustion, fuel, such as wood or oil, is broken down chemically to produce heat and light

• In a generator, an armature spinning in a magnetic field produces and electric current

• In a battery, a chemical reaction releases electrons that can flow as electric current

Tags

NGSS.HS-PS3-2

NGSS.HS-PS3-3

Which of the following is not a source of stored chemical energy that can be turned into a form of kinetic energy?

• a battery in a toy car

• food

• the nucleus of an atom

• fossil fuels

Tags

NGSS.MS-PS3-5

S8P2d In which direction does heat move?

• from warmer areas to cooler areas

• from cooler areas to warmer areas

• between areas of equal temperature

How is convection different from conduction?

• Convection can transfer heat through a vacuum, but conduction cannot

• Conduction can transfer heat through a vacuum, but convection cannot

• Convection takes place only in liquids and gases, but conduction transfers heat in solids as well

• Convection takes place only in solids, but conduction transfers heat in liquids and gases as well

Tags

NGSS.MS-PS3-3

NGSS.MS-PS3-4

Which is an example of heat transfer through radiation?

• Light from a fire shines on objects, which absorb the light and transform it into thermal energy

• A fire consumes oxygen in air to produce ash and smoke

• A fire heats a pot, which transfers heat to beans in the pot

• A fire heats the air around it, which moves out from the fire in currents of warm air

S8P4a Which statement about waves is true?

• All waves travel through a medium

• All waves contain crests and troughs

• All waves contain compressions and rarefactions

• All waves transmit energy

Tags

NGSS.MS-PS4-2