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Topic: Scientific Method

Topic: Scientific Method. 1) The process of gathering information through the senses is called __________. a) analyzing c) a hypothesis b) hypothesizing d) observation

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Topic: Scientific Method

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  1. Topic: Scientific Method 1) The process of gathering information through the senses is called __________. a) analyzing c) a hypothesis b) hypothesizing d) observation 2) The ___________ is a way to ask and answer scientific questions by making observations and doing experiments. a) observation c) conclusion b) design d) scientific method

  2. Look at the picture, And answer the following: Which statement is NOT an observation: The baby has a blue shirt. The baby is sitting. The baby wants a milk bottle. The baby has two hands. Topic Scientific Method (Inferences)

  3. Make 2 Observations a)_____________ b) _____________ 2) Make 1 Inference I think: _______________ Because _____________ 3) Write a research question 4) Write a testable question Scientific Method Drinking water from River

  4. Topic: Scientific Method Instructions: Choose the question that goes BEST with the scientific problem to perform an experiment: Problem: A student wants to know the rate at which a wax candle burns. • Which type of material makes a candle burn faster? • How fast does a wax candle burn? • How does water affect the rate at which a wax candle burns? • How do candles work?

  5. Which one is the correct sequence of the first three steps to the scientific method: State the Problem, Hypothesis, Research the Problem State the Problem, Research the Problem, Hypothesis 2) What is a hypothesis? Testable guess Quantitative observation Scientific Method

  6. How many independent variables should a scientist work with in a controlled experiment? a) As many as the investigator can handle b) One c) A maximum of three 2) The dependent variable is the thing that I can _____ in an experiment. Manipulate Change Measure Scientific Method

  7. Scientific Method (Variables) Instructions: Read and Write the following in your composition notebook and identify the different variables. Mrs. Mello wanted to see how different types of music affected students’ pulse rates. She played different types of music: rock, rap, R&B, alternative, pop, country, and classical music.

  8. Chapter 1- Classification Notes I. Living Things A. How are living things or organisms alike? 1. Living things are organized a. cell- smallest unit that carries the function of life b. each cell has a structure and contains heredity material (DNA) 2. Living things respond. a. stimulus-anything that causes some change in an organism. b. response- the way an organisms reacts to a stimulus, results in movement c. homeostasis- maintaining proper conditions within an organism

  9. 3. Living things use energy 4. Living things grow and develop. a. growth in many-cells is due to an increase in the number of cells. b. growth in a single cell is due to an increase in the size of the cell. c. development: changes that take place over a life span of an organism. 5. Reproduce B. What do living things need? 1. A place to live 2. Raw materials (water, proteins, fats, & sugar)

  10. Two Types of Cells Prokaryotic Eukaryotic

  11. Prokaryotic • Do not have structures surrounded by membranes • Few internal structures • One-celled organisms, Bacteria

  12. Eukaryotic • Contain organelles surrounded by membranes • Most living organisms (protists, fungi, plants, animals) Animal Plant

  13. Cell Theory • All living things are made up of cells. • Cells are the smallest working units of all living things. • All cells come from preexisting cells through cell division.

  14. Life Cycle • Organism Formation • Growth and Development • Death

  15. Cell Cycle • Interphase • Mitosis • Cytokinesis

  16. I. Interphase • The cell’s chromosomes duplicate. • The nucleolus is clearly visible in the nucleus. • Preparation for cell division

  17. II. Mitosis • Prophase • Metaphase • Anaphase • Telophase

  18. A) Prophase • The pair of chromatids are visible under a microscope • The nucleolus and the nuclear membrane disintegrate. • The centrioles move to the opposite. • Spindle Fiber appear.

  19. B) Metaphase • The pair of chromatids line up across the center of the cell. • The centromere of each pair usually becomes attached to two spindle fibers.

  20. C) Anaphase • Each centromere divides and the spindle fibers shorten • Chromatids separate. • Each chromatid begins to move • The separated chromatids are now called chromosomes

  21. D) Telophase • Spindle fibers start to disappear. • Chromosomes start to uncoil. • A new nucleus forms.

  22. Cytokinesis • Cytoplasm separates • Two new cells are formed.

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