Unit 1 Test - Tuesday, October 7th
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Safety
Weather and Climate
Measurement
Density
Let’s Review Together!
How hot or cold something is or a measure of heat energy.
Water that falls from the sky.
When it is greater than 32°F it will rain. When it is less than 32°F it will snow, sleet, etc.
Longer photoperiod = higher temperatures
Short photoperiod = lower temperatures
How hot or cold something is or a measure of heat energy.
When it is greater than 32°F it will rain. When it is less than 32°F it will snow, sleet, etc.
The amount of daylight in a 24 hour period.
Longer photoperiod = higher temperatures
Short photoperiod = lower temperatures
kilo h
d
deci milli -
590
0.76
890
0.0025055
K
H
D
D
C
M
74mL – 50mL
24mL
2
Unit 1 Study Guide
Let’s check your answers!
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 teacher’s website
and YOUR copy of the lab safety
contract.
Weather and Climate
( Study your “Five Factors that Affect
Climate”, “Globe Activity”, “What is
Weather” and your Weather and Climate
Quiz)
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
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.
4. How does temperature
affect precipitation?
Be SPECIFIC.
 Precipitation is affected by temperature.
If the temperature is below 32˚F, the
precipitation will be in the form of snow,
ice, etc. If the temperature is above
32˚F, the precipitation will be in the form
of rain.
Measurement
(Study your “Measurement” notes, “Mini
Metric Olympics” data sheet, “Metric
Conversion” HW and your “Metric
Practice – Group” class worksheet)
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.
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.)
7. What tool do we use to
measure liquid volume?
A graduated cylinder. Base unit for liquid
volume is LITERS (milliliters usually.)
1 mL=1cm3
8.
Circle the units that would work best for measuring
each object.
9. Complete the following
metric conversions:
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.
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.
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)
13. What is the standard system of
measurement called? What is its
abbreviation?
International System of Units. It is
abbreviated SI.
Density
(Study your “Density Demos”
worksheet and your
Phases/Changes Quiz)
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.
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.
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.
17. Explain the Rainbow Demo. (Why did
the colors mix in one set-up and stay the
same in the other?)
17. Explain the Rainbow Demo.
(Why did the colors mix in one setup 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.
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.
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.
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.
20.
What is the formula
for calculating density?
Density is calculated by mass divided by volume.
21.
Calculate the density: