Name that variable
Does adding salt to water change the rate at which water boils? What is the IV here?
Adding salt
Heat is thermal energy moving from a ________ object to a ______ object.
warmer to cooler
A material that does not conduct heat well is a(n) ___________________.
What is insulator.
Jewel wondered if adding more ice to lemonade would help it cool faster. What is the question she could ask to start her investigation.
How does the amount of ice affect thermal energy transfer?
What 3 factors affect the amount of thermal energy transfer between objects? (Hint we did 3 different labs on these the last couple of weeks)
Amount of matter, type of matter or material, environment
Does drinking caffeine increase your heart rate? What is the DV here?
Heart rate
Heat is transferred in three ways. Name the three ways.
What is conduction, convection, and radiation.
A material that conducts heat well is called a(n) ____________________.
What is conductor.
What is the IV and DV in
Jewel's investigation?
IV-amount of ice
DV-temperature
100 mL because it contains the smallest amount of liquid
The higher the temperature of water the faster an egg will cook. What is the independent variable here?
Temperature of water
Soup warming inside a pot on the stove is an example of what kind of heat transfer?
What is convection.
Wood, rubber, and cork are all good _________________.
What is insulators.
What are some variables Jewel would need to control in here experiment?
Type of liquid, amount of liquid, environment liquid was in
A student puts a cup of equal amounts of soil under a heat lamp in a warm, cold, and room temperature area. Which ares SHOULD have the greatest amount of thermal energy transfer in 20 minutes? Which variable is being tested here?
Warm should; testing environment
Grass will grow faster if it is fertilized. What is the DV here.
Grass growth
The tip of an iron poker sitting in a fire is an example of what type of heat transfer?
What is conduction.
_______________ are all good conductors.
What is metals.
What materials would Jewel need for this investigation?
Lemonade, cups of same size, ice, thermometer, timer
A student places a metal, wooden, and plastic spoon in cold water for 10 minutes and records the beginning temperature. Which spoon will have had the most thermal energy transfer at the end of 10 minutes? Why?
Metal because it is a conductor
Citrus plants that receive more light will have more juice in their fruit. The IV here is?
What is the amount of light?
Heat lamps hanging above a buffet table at a restaurant are examples of what type of heat transfer?
What is radiation.
A well-_____________ building is comfortable inside whether the weather is hot or cold outdoors.
What is insulated.
Write a procedure for Jewel's investigation.
Add 100mL of lemonade to cup 1, 2, and 3
Add 2 cubes of ice to cup a, 4, to cup b, and 6 to cup c
Find beginning temp.
Let them sit at room temp for 30 minutes
Find ending temp and change in temp and record in data table
List the steps of an investigation in order
Objective/Problem/Question
Variables
Hypothesis
Data
Analysis
conclusion