# Burn a Nut S&S 1.3. DO NOW: Respond to the following in your lab notebook- Why does our society tend to use non- renewable resources as fuel instead of.

## Presentation on theme: "Burn a Nut S&S 1.3. DO NOW: Respond to the following in your lab notebook- Why does our society tend to use non- renewable resources as fuel instead of."— Presentation transcript:

Burn a Nut S&S 1.3

DO NOW: Respond to the following in your lab notebook- Why does our society tend to use non- renewable resources as fuel instead of renewable ones? What are the advantages? What are the disadvantages?

Lesson Target Skip a line under the DO NOW and write Lesson Target Lesson Target: Weigh the advantages and disadvantages of using different energy sources.

Notes Skip a line and Write Notes To survive, our bodies need energy! 2 types of Energy Sources - food and fuel Energy Transfer - the amount of energy released can be determined mathematically; in the following Investigation, you will determine the amount of energy transferred by measuring the temperature of water.

VOCABULARY Skip a line and Write Vocabulary Energy is the ability to do work Potential Energy = stored energy Kinetic Energy = released energy

VOCABULARY cont. Fuel - used to provide energy for tasks that are important Fuels are either RENEWABLE or NON- RENEWABLE RESOURCES

VOCABULARY cont. RENEWABLE Resources - can be replenished in a single human lifetime [Ex. firewood] NON-RENEWABLE Resources - cannot be replenished in a single human lifetime [Ex. coal and gasoline]

Testable Question Skip a line and write Testable Question How does the [manipulated variable] affect the [responding variable]? NOTE: You must fill in the manipulated and responding variables.

Testable Question How does the type of fuel used to heat water affect the amount of energy transferred?

VARIABLES Controlled - at least 2 variables that will be kept the same during the Investigation Manipulated - the variable that is being changed in the Investigation Responding - the variable that is being measured in the Investigation

Variables Controlled- Amt. of water, distance from flame Manipulated- type of fuel (nut) Responding- Amt. of energy released

PreLABs cont. Skip 1 line and on the left margin write: HYPOTHESIS: It was hypothesized that if [manipulated variable] … then [responding variable]… because…

Hypothesis It was hypothesized that if different fuels are burned, nuts and kerosene, then the _______ will have more energy as measured by the change in temperature over time, because_____________.

Procedures Skip a line and write Procedures

Procedures 1.Determine the mass of a piece of foil. Add 2 grams of crushed nuts to your foil. Record the total mass on your Data Table. 2.Create a pile of nuts on the corner of your wire gauze. 3.Pour 100 mL of room temp. H 2 O into your can. Record the initial temp. on your Data Table.

Procedures cont. 4.Using a ring stand, set up your can. [You may use a ring instead of a test tube clamp]. NOTE: The bottom of the can should hang 5 cm above the wire gauze. 5.As soon as the nut is lit, record the time (or start the stopwatch).

Procedures cont. 6.Allow the nuts to burn until it goes out. 7.Record the highest temp. reached by the H 2 O in the can on your Data Table. 8.Calculate the change in temp. [ temp.] of the H 2 O. Record on your Data Table.

Procedures cont. 9.Determine the mass of the burned nuts. Calculate the change in mass [ mass] of the nut. Record on your Data Table. 10.If provided, record your data on the Class Data Table.

Procedures cont. 11.Repeat the procedures for this Investigation, using kerosene instead of a nut. NOTE: Allow the kerosene to burn for exactly 90 Seconds.

SAFETY NOTE! You will be using flame during this Investigation, so you MUST be very careful Goggles MUST be worn during this Investigation; failure to do so will result in a ZERO!

Data Table Type of Nut: Initial Temp. Final Temp. [Change] Temp. of H 2 O in can Mass of nut and holder Time

PreLABs cont. Normally, the PreLAB is due when you walk into class the day of the Lab. There may be a quiz on any or all of the components of the PreLAB

Conclusions Must be written in blue or black pen, or typed Use scientific terminology Use correct grammar/punctuation Avoid the use of pronouns and especially the word IT

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