Thermal Expansion Reading Assignment

What does a heating curve graph show?

• How pressure changes with volume

• How temperature changes as thermal energy is added

• How mass changes with heat

• How density changes with time

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Why does the temperature remain constant at 0°C on the heating curve?

• The particles stop moving completely

• The thermal energy is used to overcome attractive forces between particles

• The energy is lost to the surroundings

• The thermometer cannot measure below 0°C

Tags

NGSS.MS-PS1-4

What does the flat line at 100°C on the heating curve represent?

• Water condensing

• Water boiling

• Water freezing

• Water cooling

Tags

NGSS.MS-PS1-4

What makes plasma different from the three familiar states of matter?

• Plasma has no particles at all

• Plasma consists of atoms that have gained extra electrons

• Plasma consists of electrons and charged particles formed when atoms are stripped of electrons

• Plasma is colder than solids

For matter to become plasma, which of the following must happen?

• It must be heated until its atoms are ionized.

• It must be cooled to absolute zero.

• It must be compressed into a solid.

• It must be dissolved in water.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Why do concrete sidewalks have seams?

• To make them look even

• To allow for thermal expansion and prevent cracking

• To reduce construction costs

• To improve water drainage

What happens to the liquid inside a thermometer when energy is added?

• The particles slow down and contract

• The particles move faster and farther apart, causing the liquid to rise

• The liquid evaporates instantly

• The particles stop moving

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

How does thermal expansion allow hot-air balloons to rise?

• The heated air inside becomes more dense than the outside air

• The heated air inside becomes less dense than the outside air

• The air pressure outside increases

• The balloon becomes heavier as it expands

Why does water expand instead of contracting when cooled below 4ºC?

• Water molecules gain mass as they freeze

• Charged regions of molecules align, creating open spaces in the structure

• The density of water increases due to particle collisions

• The attractive forces between particles weaken completely

Tags

NGSS.MS-PS1-4

Which of the following best explains why ice floats in liquid water?