Unit 1b Review

Heat can be transferred in three main ways: _______________, _______________, and _______________.

• Conduction, Convection, and Radiation

• Evaporation, Melting, and Freezing

• Absorption, Reflection, and Refraction

• Diffusion, Osmosis, and Filtration

Conduction occurs when heat is transferred through direct contact. For example, when a metal spoon is placed in a hot cup of coffee, heat is transferred from the coffee to the spoon by _______________.

• conduction

• radiation

• evaporation

• insulation

Convection involves the movement of fluid (liquid or gas) where warmer parts of the fluid rise and cooler parts sink, creating a _______________ current.

• convection

• diffusion

• radiation

• reflection

Tags

NGSS.MS-ESS2-6

Radiation is the transfer of heat through electromagnetic waves. For instance, the Sun warms the Earth by _______________.

• radiation

• conduction

• convection

• insulation

Materials that transfer heat easily are called _______________.

• conductors

• insulators

• solids

• liquids

Tags

NGSS.MS-PS3-3

Materials that do not transfer heat well are called _______________.

• insulators

• conductors

• metals

• alloys

Tags

NGSS.MS-PS3-3

A comparison of a metal spoon and a wooden spoon shows that one is more effective at conducting heat than the other.

• A metal spoon conducts heat better than a wooden spoon.

• A wooden spoon conducts heat better than a metal spoon.

• Both conduct heat equally well.

• Neither conducts heat at all.

Tags

NGSS.MS-PS3-4

A phase change occurs when a substance changes from one state of matter to another. The states of matter include __solid__, __liquid__, and __gas__. When a substance is heated and its temperature increases without a change in state, it follows a __diagonal__ line on the phase change diagram. During a phase change, such as melting or boiling, the temperature of the substance __remains constant__ despite continuous heat addition.

• solid, liquid, gas, diagonal, remains constant

• solid, plasma, gas, horizontal, increases rapidly

• liquid, gas, plasma, vertical, decreases

• solid, liquid, plasma, curved, fluctuates

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Label the flat parts of the phase change diagram where the substance is melting and boiling. (Refer to the provided phase change diagram.)

• The flat parts of the diagram represent melting and boiling points.

• The flat parts of the diagram represent freezing and condensation points.

• The flat parts of the diagram represent only the solid state.

• The flat parts of the diagram represent only the gas state.

Tags

NGSS.MS-PS1-4

The temperature remains constant during a phase change even though heat is being added because:

• the added heat is used to break intermolecular bonds rather than increase temperature

• the substance is losing energy to the surroundings

• the heat is not sufficient to change the temperature

• the thermometer is malfunctioning

Tags

NGSS.MS-PS1-4