Grade 7 Science

 
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Grade 7 Science

Recommended Grade Level: 7

This course introduces the students to life sciences, cells, genetics, ecology, key cycles of life, plant & animal characteristics, the human body. Students learn about the weather patterns and how they affect earth.

 

Prerequisites:

 

For the labs in the course, the students will need the following items:

Unit 1 Lab: Plastic Sandwich Bag vs. Pencil Experiment

  • Three identical plastic sandwich bags
  • Sharpened pencil
  • Enough water to fill a plastic sandwich bag

Unit 1 Lab: Growing Insects

  • 2 sponge toy insects or another type of animal (often come in capsules and then grow in water)
    triple beam balance
  • 100 ml graduated cylinder
  • 2 large bowls
  • 1 beaker that can be heated
  • Metric ruler
  • Thermometer
  • Paper towel
  • Tap water
  • Timer
  • Hot plate
  • Tongs

Unit 2 Lab: Letter “e”

  • Compound microscope
  • Microscope slide
  • Pair of scissors
  • Clear tape or slide cover slip
  • Page from a newspaper
  • Light source, if needed

Unit 2 Lab: Cheek Cell

  • Compound microscope
  • Microscope slide
  • Slide cover slip
  • Medicine dropper
  • Iodine
  • Toothpick
  • Cells from the inside of your cheek

Unit 3 Lab: Generations of Traits

  • 6 cups
  • 4 pompoms of each of the following colors:
    • Red
    • Pink
    • Green
    • Light green
    • Blue
    • Light blue
    • Purple
    • Light purple
  • A crayon or marker to match each color of pompom
  • Permanent marker

Unit 3 Lab: Natural Selection

  • 1 assistant
  • Hole punch
  • 2 sheets of black paper
  • 2 sheets of white paper
  • Forceps

Unit 3 Lab: Predator and Prey Adaptations

  • Markers or colored pencils

Unit 4 Lab: Physical Properties of Matter

  • Small cube or block of wood that can fit in a graduated cylinder
  • Metric ruler with centimeters
  • Calculator
  • Water
  • Graduated cylinder (500 ml or 1000 ml)
  • String
  • Triple beam balance
  • 3 beakers labeled A, B, and C with the range of 250–1000 ml (Beaker B needs to be filled and left out ahead of time to make the water room temperature)
  • Hot plate or Bunsen burner
  • Ring stand with bracket to hold a thermometer
  • Thermometer with temperature in Celsius
  • Crushed ice (enough to fill one beaker)
  • Distilled water (enough to fill one beaker three different times

Unit 4 Lab: Marshmallow Catapults

  • Mousetrap
  • Rubber band
  • 2 rectangular erasers
  • Duct tape
  • 2 popsicle sticks
  • Plastic spoon
  • Marshmallows in two different sizes
  • Meter stick

Unit 5 Lab: Cloud Formation

  • 2-liter plastic bottle
  • Warm water
  • Matches

Unit 6 Lab: Xylem

  • 2 glass containers
  • Celery stalks (with leaves; about 10 stalks for every 25 students)
  • Clear nail polish
  • Blue food coloring
  • Glass tube (hollow; the smaller the diameter, the better)
  • Metric ruler
  • Leaves from plants
  • Microscope
  • Transparent tape
  • Microscope slide
  • Microscope cover slip

Unit 6 Lab: Seed Germination

  • 5 plastic zip-top bags
  • 5 paper towels
  • Distilled water
  • Graduated cylinder
  • Seeds of 5 different plants, 10 seeds of each plant (good choices are beans, corn, green peas,
    lettuce, radishes, or squash)
  • Permanent marker

Unit 6 Lab: Flower Model

  • Colored paper or card-stock
  • Pipe cleaners
  • Straws
  • Wire
  • Sponges
  • Plastic bottles and bottle caps
  • Cotton swabs
  • Paper plates
  • Disposable cups
  • String or yarn
  • Beads or buttons
  • Scissors
  • Glue
  • Tape
  • Permanent marker for labeling

Unit 8 Lab: Crustaceans

  • Daphnia
  • Transfer pipette
  • Clean depression slide
  • Compound microscope
  • Small container
  • 1% ethanol in a dropper bottle
  • Water
  • Eyedropper
  • Timer or clock with a second hand

Unit 9 Lab: Respiration

  • 2 feet of aquarium tubing
  • Lime powder
  • Masking tape
  • Matches
  • Measuring cup
  • Plastic dish pan
  • pen
  • Straw
  • Water

Unit 9 Lab: Nervous System

  • Meter stick
  • Small book
  • Blindfold
  • Two classmates

Unit 10 Lab: Biodiversity

  • 2 water samples from two different locations (local ponds, streams, lakes,
    or rivers)
  • 3 glass culture dishes or depression slides
  • Hydra population in hydra medium
  • Brine shrimp or Daphnia (If brine shrimp are fed to the hydra, make sure the salt water is rinsed off; otherwise, you will kill the hydra)
  • Distilled water
  • 4–6 droppers or pipettes
  • Microscope
  • Paper or tape for labeling

Unit 10 Lab: Drinking Water and the Sun

  • Clean drinking glass
  • Plastic wrap or any clear plastic food covering
  • 1 teaspoon curry
  • ½ cup drinking water
  • 1 teaspoon food dye
  • 1 teaspoon garlic
  • Large, clear bowl
  • Spoon for mixing
  • Pebble
  • 1 teaspoon pepper
  • PH paper
  • 1 teaspoon salt
  • ½ cup vinegar

 

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