1. 12/6 & 12/7 - 7 th Grade Agenda Learning Objective: Learn about Science Fair Project Collect HW: Reading & Notetaking p.171-174 Seed Plants Video: Science Fair Project Science Fair Project Textbook Reading 365 - 374 HW: Reading & Notetaking p.175 – 178 Reminder HW: Science Fair Topic due 12/20 & 12/21 (10 Points)

2. Reflection Prompt: Write 2 reasons why plants are important to us. What would happen if there were no plants on the planet?

3. What is a plant? Autotrophs - Photosynthesis Cell Wall (Made of cellulose, a chemical that makes the walls rigid) Multicellular.

4. Origin of Plants – When did plants first appear? Oldest plant: 400 million years old Ancient Green Algae were ancestors of today’s plants.

5. 5 things that plants must do to survive on land. 1.Obtaining water and other materials 2.Retaining Water 3.Transporting Materials 4.Support 5.Reproduction

6. Living on Land – How do plants retain water? Cuticle: Waxy waterproof layer covers the leaves of most plant and helps to retain water.

7. Transport and Support – How can plants grow so tall? Vascular tissue: Internal tube like structures through which water and food move inside the plant

8. Classification of Plants Nonvascular Plant: Grows low to the ground Vascular Plant: Grows tall

9. Reproduction – Do plants produce eggs and sperms? In plants, Fertilization occurs when sperm cell unite with an egg cell The fertilized egg is called a zygote.

10. Complex Life Cycle Sporophyte Stage: Plant produce spores Gametophyte Stage: The plant produce two kinds of sex cells or gametes (sperm & egg cells)

11. Nature of Light Light is made up of red, orange, yellow, green, blue, and violet light Sun is the source of energy on Earth.

12. Why does the lemon looks yellow and leaves look green? Because lemon reflects yellow light Plant leaves reflect green light.

13. Which color of light is absorbed by chlorophyll? Chlorophyll absorb blue and red light

14. Why do leaves turn red and yellow in the autumn? Chlorophyll masks the color of most accessory pigments during most of the year In cool temperatures, chlorophyll breaks down and the colors of accessory pigments can be seen.

15. Photosynthesis Carbon dioxide + water  sugar + oxygen Excess food made by plants are stored in the roots, stems or leaves

16. Science Fair Project (85 Points) Science Fair Topic & Hypothesis due 12/10 & 12/21 Final Project due 2/23 & 2/24 Need to come up with a question and hypothesis. Next, you need to conduct an experiment and publish results.

17. Nature of Inquiry Posing a q________ Forming a Hy________ Design an Ex________ Collect and Int_________ data Draw C__________ Com__________ uestions pothesis periments erprete onclusions municate

18. Scientific Inquiry Scientific Inquiry refers to the diverse ways in which scientists inve_______ the natural world and pose expl__________ based on the evidence they gather. stigate anations

19. 1 st Step: Posing Questions Scientific Inquiry often begins with a problem or question about an obse_________. rvation

20. 2 nd Step: Hypothesis Hypothesis is a possible expl_______ for a set of observation or answer to a scientific question anations

21. 3 rd Step: Design an Experiment An experiment in which only one var______ is manipulated at a time is called a controlled experiment Why is only one variable manipulated? iable

22. 4 th Step: Collecting and Interpreting Data Data are the facts, figures, and other evi_______ gathered through observations. It is usually a data or a chart dence

23. 5th Step: Drawing Conclusions A conclusion is a summary of what you have lea_____ from an experiment. rned

24. 6th Step: Communicating Communicating is sharing of ideas and experimental findings with others through writing and sp______. eaking

25. Reflection Prompt: Examine the Science Fair Boards that you see around the room and write 4 Hypothesis that you like. (write in complete sentences)