Unit 1 Test - Tuesday, October 7th

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Unit 1 Test - Tuesday, October 7th

• Safety
• Weather and Climate
• Measurement
• Density
• Lets Review Together!

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Weather Quiz
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Weather Quiz
How hot or cold something is or a measure of heat
energy.
Water that falls from the sky.
When it is greater than 32F it will rain. When
it is less than 32F it will snow, sleet, etc.
Longer photoperiod higher temperatures Short
photoperiod lower temperatures
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Weather Quiz
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HONORS Weather Quiz
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HONORS Weather Quiz
How hot or cold something is or a measure of heat
energy.
When it is greater than 32F it will rain. When
it is less than 32F it will snow, sleet, etc.
The amount of daylight in a 24 hour period.
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HONORS Weather Quiz
Longer photoperiod higher temperatures Short
photoperiod lower temperatures
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Measurement Quiz
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Measurement Quiz
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Measurement Quiz
kilo -
h
d
deci -
milli -
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Measurement Quiz
590
0.76
890
0.0025055
K
H
D
D
C
M
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Measurement Quiz
74mL 50mL
24mL
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Unit 1 Study Guide

• Lets check your answers!

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Part 1. Safety

• 1. Review your lab safety rules on the reverse of
  your lab safety assessment (the poster/video
  project.) They are also located on your
  teachers website and YOUR copy of the lab safety
  contract.

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Weather and Climate ( Study your Five Factors
that Affect Climate, Globe Activity, What is
Weather and your Weather and Climate Quiz)
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2. What are the five factors that affect climate?
List them 1 to 5 and explain how each influences
the climate of an area.

• A. latitude as latitude increase, average
  annual temperature decreases
• B. closeness to a large body of water water
  moderates the temperature, cooler summers, warmer
  winters
• C. Orographic effect wind blows off of the
  ocean toward mountain ocean side is rainy, other
  side is dry
• D. elevation as elevation increases, average
  annual temperature decreases
• E. ocean currents warmer current, warmer
  climate colder current, cooler climate

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3. What is the difference between weather and
climate?
Climate is the general pattern of weather that we
expect in an area over a long period of time.
Weather is the specific day-to-day conditions in
the atmosphere. Climate is what you expect,
weather is what you get. Climate tells you what
clothes to buy, weather tells you what clothes to
wear.
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4. How does temperature affect precipitation? Be
SPECIFIC.

• Precipitation is affected by temperature. If the
  temperature is below 32F, the precipitation will
  be in the form of snow, ice, etc. If the
  temperature is above 32F, the precipitation will
  be in the form of rain.

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Measurement (Study your Measurement notes,
Mini Metric Olympics data sheet, Metric
Conversion HW and your Metric Practice Group
class worksheet)
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5. What do we use a triple beam balance or
electronic balance to measure?

• Mass. (The amount of MATTER in an object.)
• Base unit of mass is GRAMS.

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6. What tool do we use to measure length?

• A metric ruler, a meter stick, or a measuring
  tape. Base unit of length is METERS (centimeters
  usually.)

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7. What tool do we use to measure liquid volume?

• A graduated cylinder. Base unit for liquid volume
  is LITERS (milliliters usually.)
• 1 mL1cm3

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8. Circle the units that would work best for
measuring each object.
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9. Complete the following metric conversions
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10. What tool do we use to measure volume of
regular rectangular solid? What units do we
measure in? What is the formula to determine the
volume?

• We use a centimeter/metric ruler to measure the
  volume of a regular rectangular solid.
• Base unit for volume of a solid is cm3.
• We find volume of regular solids by multiplying
  length x width x height.

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11. What is the proper procedure for using a
graduated cylinder? Include ALL steps.

• Place the cylinder on a level surface. Get down
  to eye level with the liquid. Look for the curve
  of the liquid in the cylinder (meniscus). Read
  the bottom of the meniscus.

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12. What is water displacement? Why is it used?

• Water displacement is a method to measure the
  volume of an irregular solid. First you put an
  amount of liquid in the graduated cylinder.
  Measure that volume. Then, drop the object in
  the cylinder. Measure the new volume of the
  liquid. The difference in the volume is equal to
  the amount of space the object is taking up (its
  volume)

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13. What is the standard system of measurement
called? What is its abbreviation?

• International System of Units. It is abbreviated
  SI.

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Density (Study your Density Demos worksheet
and your Phases/Changes Quiz)
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14. Why do objects sink or float? (Make sure to
include the word density in your answer!)

• Objects sink or float depending on their density.
  For example, if an object has a greater density
  than water, it will sink when placed in water.
  However, an object with a lower density than
  water, will float when placed in water.

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15. What causes some objects to be more dense
than others? (Think about how much stuff is in a
certain volume).

• When more matter (stuff) is packed into a certain
  space (volume), an object has a greater density.
  When less matter (stuff) is packed into a certain
  space (volume), an object has a lower density.

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16. For the Super Stacker density column demo we
did in class, explain how and why the substances
separated into layers (make sure to include the
word density in your answer).

• The three liquids separated into layers because
  they had different densities. The corn syrup had
  the highest density, so it sank to the bottom.
  The oil had the lowest density, so it floated to
  the top.

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17. Explain the Rainbow Demo. (Why did the
colors mix in one set-up and stay the same in the
other?)
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17. Explain the Rainbow Demo. (Why did the
colors mix in one set-up and stay the same in the
other?)

• In the rainbow demo, the set-up on the left had
  cold water on the bottom and hot water on top.
  The molecules were already happy because the
  cooler, more dense molecules were on the bottom
  and the warmer, less dense molecules were on top.
  However, in the set-up on the right, the colors
  mixed. The warmer, less dense molecules were on
  the bottom and the cooler, more dense molecules
  were on the top. This difference in density
  caused the colors to mix as the less dense
  molecules rose and the more dense molecules sank.

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18. For the hot air balloon demo, discuss A.
Where the air molecules went when heat energy was
added, B. Why the particles go there, C. What
the air molecules were doing before heat energy
was added.
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18. For the hot air balloon demo, discuss A.
Where the air molecules went when heat energy was
added, B. Why the particles go there, C. What
the air molecules were doing before heat energy
was added.

• A. The addition of heat energy caused the air
  molecules to spread out and rise.
• B. These warmer air particles became less dense
  than the surrounding air particles and thus rose.
• C.The air molecules were staying the same before
  the addition of heat energy because they had the
  same density, so therefore, did not rise or sink,
  relative to each other.

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19. How can multiple objects, which are exactly
the same size and shape, have a different mass?

• Objects of the exact same volume (size and shape)
  can have a different mass because they may have
  different amounts of STUFF (mass) packed into
  their space. This makes them more or less DENSE.

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20. What is the formula for calculating density?
Density is calculated by mass divided by volume.
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21. Calculate the density