Energy and Motion
Conduction, Convection, Radiation
Density
States of Matter
Change in Temperature
100
When an object cools down, its molecules lose energy, slow down, and pack closer together, causing the object to shrink. This process is called by this term.
Is it contraction or expansion?
What is contraction
100
This type of heat transfer happens through direct touch, like burning your hand when touching a hot pan.
- What is conduction?
100
This type of heat transfer happens in liquids and gases when warm fluid rises and cold fluid sinks.
What is convection?
100
In this state of matter, the particles are locked in place and can only vibrate.
What is a solid?
100
In science class, a cup of water starts at 70°F and heats up to 95°F. This is the change in temperature.
What is 25°F? (Math: 95 - 70 = 25)
200
When two objects touch, heat transfers because the fast-moving molecules of the hotter object bump into the slower molecules of the colder object.
What is conduction
200
This type of heat transfer travels in invisible waves through the air or space, like warmth from a campfire or the Sun.
What is radiation?
200
Calculate the density of a rock that has 10 grams and the volume of 5 cm3?
What is 2 g/cm3?
200
What method of heat transfer is occurring in the water? Look at the arrows.
What is convection?
200
A block of ice at 32°F melts on the counter until it reaches a room temperature of 72°F. This is how much the temperature changed.
What is 40°F? (Math: 72 - 32 = 40)
300
This law states that energy cannot be made from nothing or destroyed; it can only change into a different form.
What is the Law of Conservation of Energy?
300
Heat always flows naturally in this direction
- What is from hotter areas to colder areas?
300
In a convection current, warm air or water rises because it becomes less of this.
What is density?
300
What phase change is represented by # 4
What is a evaporation?
300
What is the change in temperature of the water?
Use the Chart below.
What is - 55? There was a decrease
400
When you heat up a cup of cold water, the thermal energy causes the water molecules to increase this specific type of energy as they speed up.
- What is kinetic energy?
400
Materials like wood, plastic, and rubber do not let heat pass through them easily. They are called by this term.
What is an insulator?
400
Wind on Earth is created because of this type of heat transfer.
What is convection?
400
This happens when a liquid slowly turns into a gas from its surface, like a puddle drying up on a sunny day.
What is evaporation?
400
I have three coolers. The temperature in each cooler stared at 15 degrees. Over 30 minutes the coolers increased to:
Cooler # 1- 27 degrees
Cooler # 2- 33 degrees
Cooler # 3- 47 degrees
Which cooler was best at maintaining the temperature?
What is cooler # 1 at 27 degrees.
500
: This is the coldest possible temperature in the universe, where molecules lose all of their thermal energy and completely stop moving.
What is absolute zero?
500
This is the only type of heat transfer that can travel through empty space where there is no air at all.
What is radiation?
500
If a rock at 1.2 g/CM3 is placed into a density tower, between what two layers would the rock float?
What is between layers 3 and 4?
500
Which jar is filled with gas?
What is Jar 1? Or what is the jar on the left?
500
Based on your knowledge and image below, is wood or metal a better conductor of heat energy?
What is metal?