SeetheDifference
Lookattheimageofahandholdingalizard.Thisimagewastakenwithaspecialcamera.Itshowshowmuchheatanobjectgives off.
hand
lizard
HOTTER
COLDER
Thiselephantcoolsdownbyfanningits ears.
Thisspider’sbodyiscoolerthanits environment.
Thehandiswarm.Itshowsupinred.Thelizardiscolder.Itshowsupasblue.Beforebeingheld,itwasdarkblue,likethebackground.Whathappenswhenthelizardandtheperson touch?
Thelizardgetsheatfromtheperson’shand.Itsbodywarmsup.Now,itsfeetandlegsshowupasgreenand yellow.
HOTTER
COLDER
Thiscatmakesitsownbodyheat.Itleavesbehindatrailofwarm pawprints.
Watchasapersonleaveswarmfootprintsonacold floor.
COLDER
HOTTER
gharial
Thesunhelpswarmthis reptile.
Birdsareagoodexample.Theyneedalotofenergytofly.Foodgivesthemthatenergy.Astheirbodiesuseupthefood,theyhavetheenergytoflyandtostaywarmatall times.
FoodandEnergy
Someanimalscankeepasteadybodytemperature.Otherscannot.Why?Ithastodowithenergyand food.
Foodgivesanimalsenergy.Energyhelpsmakeheat.Endothermsneedtoeatalottohaveenoughenergy tostay warm.
HOTTER
COLDER
meerkats
Thesemeerkatscontroltheirownbody heat.
flamingos
HOTTER
COLDER
Someoftheseflamingoshaveonelegthatishotterthantheother.Whenaflamingostandsononeleg,thatleglosesheat,whiletheotherlegistuckedupnexttoitsbodykeeping warm.
