Phases of Matter
Heat Transfer
EMS
Name That Picture
Nature of Science
100
What is vaporization?
Conversion of a substance from the liquid or solid state into the gas (vapour) state.
100
A cup of water is left out overnight. In the morning, how will the temperature of the water compare to the temperature of the air in the room?
The water and the air will be the same temperature.
100
What does ROYGBIV stand for?
Red, Orange, Yellow, Green, Blue, Indigo, and Violet.
100
Is this picture an example of reflection or refraction?
Reflection
100
What is a hypothesis?
A statement that can be tested through a scientific investigation.
200
What type of energy is produced by the Sun, can pass through windows, and can warm the inside of a classroom?
(Hint: Not Radiation)
Light Energy
200
Jeremy's soup is too hot to eat. He gets a cold spoon and stirs the soup. What change in energy happens to the soup and the spoon?
The soup loses heat and the spoon gains heat which is conduction.
200
What is the order of the EMS? (Rabbits Meet In Very Unique eXpensive Gardens)
Radio = Rabbits
Microwave = Meet
Infrared = In
Very = Visible
Ultraviolet = Unique
X-Ray = eXpensive
Gamma = Gardens
200
Is this picture an example of reflection or refraction?
Refraction
200
Cathy conducts a scientific investigation. How can she make sure her results are valid?
Repeat the investigation several times.
300
Another word for freezing is...
Solidification
300
What causes liquid water to freeze?
Particles transfer heat and slow down.
300
The longest wavelength in the rainbow is...
(Hint: Color)
Red
300
Is this an example of conduction, convection, or radiation?
Radiation
300
Arthur reads an article describing an experiment to test the effects of caffeine on the reaction time of humans—how long it took them to respond to a particular signal. In the experiment, the subjects' reaction times were measured, then they were divided into three groups. One group was given a high dose of caffeine. The second group was given a medium dose of caffeine. The third group was given a sugar pill that had no caffeine. After waiting 45 min for the caffeine to take effect, the reaction times were measured again. In the experiment Arthur read about, what was the outcome variable (dependent variable)?
The change in reaction times for each person.
400
In matter, atoms are constantly in ___.
Motion
400
Which kind of heat transfer moves from one object to another by touch?
Conduction
400
The shortest wavelength in the rainbow is...
(Hint: Color)
Violet
400
Is this picture an example of reflection or refraction?
Reflection
400
Julia wants to find out which color fabric will heat up the fastest when put under a direct light.
So, she places pieces of red, white, and green fabrics outside in the sunlight. Then, she places pieces of black, yellow, and blue fabric inside under a bright lamp. Finally, she measures the temperature of all the fabric samples every 5 minutes. Will Julia's results be valid?
No, she has more than one independent variable.
500
Water Droplets on the outside of a cup is an example of ___.
Condensation
500
Which kind of heat transfer travels through empty space? (For example, the sun).
Radiation
500
Which EMS wave causes sunburn?
Ultraviolet
500
Is this an example of conduction, convection, or radiation?
Convection
500
A scientist wants to get the most accurate results for his experiment, so he does multiple trials and averages the result. This is an example of...
Repetition
600
Steam from a tea kettle is an example of ___.
(Hint: Starts with an "E")
Evaporation
600
Adrianne has just poured a cup of hot coffee. When she grabs the cup, it is very hot because the heat has transferred from the coffee to the cup. What kind of cup is Adrianne most likely using? Wooden, plastic, or tin?
A tin cup.
600
Which EMS wave lets us see our bones?
X-Rays
600
Is this (feet on hot concrete) an example of conduction, convection, or radiation?
Conduction
600
Janet learned in science class that the amount of salt that can dissolve in a certain amount of water depends on the temperature of the water. She decides to do an experiment to test this.
She carefully adds salt, 100 mg at a time, to a cup of water and stirs until all the salt dissolves. When she has added so much salt that it will not dissolve after 5 minutes, she measures the temperature of the water. She records the temperature and the final amount of salt. She does this with cold water, cool water, room-temperature water, warm water, and hot water. What is the test variable (independent variable) in this experiment?
The temperature of the water.
700
What is sublimation?
Conversion of a substance from solid to gas without becoming liquid.
700
Heat energy in liquids or gases is transferred by ____.
Convection
700
Which EMS wave is made with radioactive elements?
Gamma Rays
700
Is this an example of conduction, convection, or radiation?
Radiation
700
A scientist read about an experiment done by someone else. She does the same experiment in her lab to make sure it works. This is an example of...
Replication
800
Which of the following occurs when a substance changes its state of matter (e.g., from a liquid to a gas or from a solid to a liquid)?
The amount of heat changes or is transferred.
800
Heat transfer stops when...
The objects reach a thermal equilibrium (balance).
800
Which EMS wave means "below red"?
Infrared
800
Is the pot on the stove an example of conduction, convection, or radiation?
Conduction
800
Walter learned in science class that different substances release heat at different rates. He decides to test this.
At home, Walter turns the oven to 200°F. He places three casserole dishes in it: one is made of metal, one is made of glass, and one is made of ceramic. He leaves them in the oven for an hour. He then removes them from the oven, places a single ice cube on each one, and times how long it takes the ice cube to melt. In this experiment, what is the test variable (independent variable)?
The material each pan is made of.
900
Which state of matter takes the shape of its container while keeping its size (volume).
Liquid
900
Another word for heat is...
Thermal
900
Which EMS wave is used in communication such as cell phones?
Microwaves
900
Is this picture an example of reflection or refraction?
Refraction
900
Yusef is doing an experiment to find out how the amount of sunlight affects the growth of a seedling. He has three identical pots containing grass seeds that he planted at the same time. He puts them in windows that receive different amounts of sunlight each day. Every day, Yusef looks at the pots and records his observations. What is the variable in Yusef's experiment?
Amount of sunlight.
1000
What is the boiling point of water?
100 degrees Celsius or 212 degrees Fahrenheit
1000
Boiling is an example of which kind of heat transfer?
Convection
1000
Which EMS wave is used to transmit tv signals?
Radio Waves
1000
What is this picture an example of?
White light entering a prism.
1000
The observed results of an experiment that occur from changes in the test variable (independent variable) are known as _______.
Outcome variables.