12/14 - 7th Grade Agenda Learning Objective: Learn about Science Fair Project Collect HW: Reading & Notetaking p.172-173 Change Jobs Textbook Reading 363 - 371 HW: Reading & Note taking p.175 – 177 Reminder: Chap 4 Test 12/15 & 12/16 Reminder: Science Fair Proposal due 12/15 & 12/16

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

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

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

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

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

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

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

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.

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

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

Science Fair Project (85 Points)

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

Scientific Inquiry stigate anations 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

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

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

3rd 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

4th 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

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

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

Reflection Prompt: Examine the Science Fair Boards that you see around the room and write 3 Hypothesis that you like. (write in complete sentences)