Lab Equipment
Observations and Inference
Lab Equipment pt2
IV/DV
Water
Chemical/Physical Weathering
100
What unit of measurement does the TRIPLE BEAM Balance use?
Grams (g)
100
What is a qualitative observation?
Observations that are made using the 5 senses.
(The describe a physical qualities)
100
What does a thermometer measure?
Temperature
100
Michael conducted an experiment where 5 different colored (red, yellow, green, blue, white) bowls with 15mL of water were placed in a bird aviary. The amount of water left in the bowls was calculated and recorded.
What is the INDEPENDENT VARIABLE?
Color of the bowls
100
What makes a molecule polar?
A molecule that has one slightly positive end and one end that is somewhat negative.
100
Give an example of Chemical Weathering.
Acid Rain dissolving a rock.
Acid Rain changes the color of a rock.
200
What unit of measurment does a beaker use?
Milliliters (mL) or Liter (L)
200
Give an example of a quantitative observation
Answers may vary but should include a number.
200
What does a graduated cylinder measure?
Volume
200
Michael conducted an experiment where 5 different colored (red, yellow, green, blue, white) bowls with 15mL of water were placed in a bird aviary. The amount of water left in the bowls was calculated and recorded.
What is the DEPENDENT VARIABLE
The amount of water left in the bowl.
200
What temperature would water molecules move the fastest?
45 C
90 C
145 C
145 C
200
Explain physical weathering.
Rocks are broken down into smaller pieces by force.
300
What unit of measurement does a metric ruler use?
Meters, Millimeters (m or mm)
300
What is a quantitative observation?
An observation made by counting or measuring.
300
What does a triple beam balance measure?
Mass
300
Michael conducted an experiment where 5 different colored (red, yellow, green, blue, white) bowls with 15mL of water were placed in a bird aviary. The amount of water left in the bowls was calculated and recorded.
What is the CONSTANT?
The amount of the water initially placed in the bowls.
(15mL)
300
Draw a picture that shows why water is polar and label the parts of a water molecule.
300
Explain Chemical Weathering.
Chemical Weathering is when rocks change due to chemicals like water breaking them down over time.
400
What unit of measurement does a graduated cylinder use?
Milliliters (mL)
400
Give and example of a qualitative observation.
Answers may vary but should include a physical property of an object.
400
What does a beaker measure?
Volume
400
Read the hypothesis. If the temperature of the water changes then the amount of undissolved salt will change.
What is the INDEPENDENT VARIABLE?
Temperature of Water
400
Why is water considered a polar molecule?
Oxygen has a slightly negative charge and Hydrogen has a slightly positive charge.
400
Give an example of physical weathering.
Freezing and Thawing
Plants and animals breaking rocks
Wind or water breaking down rocks
500
What unit of measurement does a thermometer use? (IN SCIENCE)
Celcius (C)
500
What is an inference?
A statement made using background knowledge and observations.
500
What does a metric ruler measure?
Length
500
Read the hypothesis. If the temperature of the water changes then the amount of undissolved salt will change.
What is the DEPENDENT VARIABLE?
Amount of Dissolve Salt
500
Why do land and water heat at different rates?
Water requires more energy to heat than land.
500
Look at the triple beam balance.
What is the mass of the triple beam balance? You must include the correct unit of measurement.
545.2g