How do living How do living things use Energy?things use Energy?

Objective: Objective:

Where do living things get energy and Where do living things get energy and how do they use it?how do they use it?

Vocabulary preview sheetVocabulary preview sheet Rate yourself 1-4 on your understanding of Rate yourself 1-4 on your understanding of

each word at this time in the rating before each word at this time in the rating before columncolumn

4 – you understand the word well enough to 4 – you understand the word well enough to explain to someone else what it meansexplain to someone else what it means

3- pretty sure you know what it means3- pretty sure you know what it means 2- heard the word before, but not sure exactly 2- heard the word before, but not sure exactly

what it meanswhat it means 1- Never heard the word or no idea what it 1- Never heard the word or no idea what it

means. means.

We will watch a few short videos about We will watch a few short videos about photosynthesis. photosynthesis.

PhotosynthesisPhotosynthesis

PhotoPhoto – light – light

SynthesisSynthesis- to make - to make

PhotosynthesisPhotosynthesis – to make food energy – to make food energy using light energy using light energy

PhotosynthesisPhotosynthesis

Examples:Examples:

Plants and some protistsPlants and some protists

Carbon Dioxide: Carbon Dioxide:

A compoundA compound containing one carbon containing one carbon and two oxygen atoms. and two oxygen atoms.

Formula: COFormula: CO22

Water: Water:

A compound containing two hydrogen A compound containing two hydrogen and one oxygen atoms. and one oxygen atoms.

Formula: HFormula: H22OO

Oxygen: Oxygen:

A compound containing two oxygen A compound containing two oxygen atoms. atoms.

Formula: OFormula: O22

Sugar (Glucose): Sugar (Glucose):

a compound containing 6 carbon , 12 a compound containing 6 carbon , 12 hydrogenhydrogen and 6 oxygen atoms. and 6 oxygen atoms.

Formula: CFormula: C66HH1212OO66

http://www.pbs.org/wgbh/nova/methuselah/photosynthesis.html

Put it together and what Put it together and what do you get?do you get?

Formula:Formula:

_Sunlight____Sunlight___

COCO22 + H + H22O = OO = O22 + C + C66HH1212OO66

Photosynthesis:Photosynthesis:

Carbon dioxide + Water = Oxygen + sugarCarbon dioxide + Water = Oxygen + sugar

Respiration: Respiration:

When an organismWhen an organism makes kinetic energy using food energy.makes kinetic energy using food energy.

Reverse of photosynthesisReverse of photosynthesis All organisms do this even plants. All organisms do this even plants.

RespirationRespiration

Formula: Formula:

_Kinetic Energy______Kinetic Energy_____

OO22 + C + C66HH1212OO66 = CO = CO2 2 + H+ H22OO

Complete the T-Chart that compares Complete the T-Chart that compares how photosynthesis and respiration are how photosynthesis and respiration are similar and different: similar and different:

SimilarSimilar DifferentDifferent

Diagram of Diagram of photosynthesis and photosynthesis and respiration respiration

Use the words, pictures and arrows to Use the words, pictures and arrows to show the processes of photosynthesis show the processes of photosynthesis and Match the words with the formulas. and Match the words with the formulas.

Once completed, raise your hand to get Once completed, raise your hand to get checked.checked.

Then draw the picture and explain in your Then draw the picture and explain in your journal. journal.

Do the same for respirationDo the same for respiration

Discussion QuestionsDiscussion Questions

• Can animals live without plants? Can animals live without plants?

• Can plants live without animals? Can plants live without animals?

Virtual Lab Virtual Lab

http://www.glencoe.com/sites/common_assets/science/virtual_labs/LS12/LS12.html