Card Set Information

2010-06-03 21:27:14

Everything from 7th grade science!
Show Answers:

  1. What do you use to measure mass?
    A triple beam balance
  2. What unite of measurement do you use to measure mass?
    Grams (g)
  3. What do you use to measure volume?
    A graduated cylider
  4. What unit of measurement do you use to measure volume?
    Liters (L)
  5. What do you use to measure temperature?
    A thermometer
  6. What unit of measurement do you use to measure temperature?
    Degrees Celsius
  7. What do you use to measure length?
    A metric ruler
  8. What unit of measurement do you use to measure length?
    Meter (m)
  9. List the steps of the scientific method:
    • 1. ask a question
    • 2. develop hypothesis
    • 3. design and run an experiment
    • 4. collect and record data
    • 5. analyze the data
    • 6.form a conclusion
    • 7. communicate or share your results
  10. Hypothesis:
    a prediction of a possible outcome to an experiment
  11. Independent Variable:
    the one thing you change in an experiment. (Manipulated variable)
  12. Dependent Variable:
    the measure of the change. (Responding variable)
  13. Constant:
    Things that remain unchanged in an experiment.
  14. Explain how to make a wet-mount slide.
    • 1. Place the specimen on the of the slide.
    • 2. Place a drop or two of water on the specimen.
    • 3. Place a coverslip on specimen at an angle to prevent air bubbles from forming.
  15. What do things look like under the microscope?
    They are upside-down and backwards.
  16. What would happen to the image if you moved the slide to the left?
    It would move to the right.
  17. Who first discovered cells?
    Robert Hooke
  18. When did Robert Hooke discover cells?
  19. List reasons why plant and animal cells are different.
    • 1. Plant cells have a cell wall.
    • 2. Plant cells are square and animal cells are round.
    • 3. Animal cells have lysosomes.
    • 4. Plant cells have chloroplast.
  20. What is the function of the nucleus?
    It is the control center of the cell and contains the genetic material.
  21. What is chloroplast?
    Absorbs sunlight for a plant cell to make food.
  22. Cytoplasm?
    Jelly-like fluid that contains the organels.
  23. Cell membrane?
    Allows things in and out of the cell.
  24. Cell wall?
    Protects and supports plant cell.
  25. Mightochondria?
    Converts food into energy. Powerhouse of the cell.
  26. Ribosomes?
    Makes proteins out of amino acids.
  27. Vacuole?
    Stores water and other materials.
  28. What is osmosis?
    The movement of water through a membrane from high concentration to low concentration.