8th Grade Science Spring Break Packet 2015 - Lauderhill 6-12

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CLASS:
DATE:
8th Grade Science Spring Break Packet 2015
Part I: Plant and Animal Cells: Read the following information and then complete
the exercise.
EXERCISE: Compare the plant and animal cells below. Use the picture to complete the
framed comparison and contrast framed paragraph below.
DUE DATE:
3/30/15
EX. CREDIT:
Animal and plant cells are similar in that they both have _____________________,
_________________________ and ____________________________________.
However, only the plant cell has a _________________________ and _______________.
A ___________________________________can be found only in the animal cell.
PART II. Body Systems
Kelly was playing soccer and sprained her ankle. She was unable to walk without being
in pain and the increased swelling was obvious. Write three body systems and simply
explain how each is involved in the injury.
1. __________________________: ___________________________________________________
2. __________________________: ____________________________________________________
3. _________________________: _____________________________________________________
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PART III: Comparing Mitosis and Meiosis
Mitosis and Meiosis are both processes used in cell division, but they have different purposes.
Read each statement below and determine if it is related to Mitosis or Meiosis. Write your
answer on the line next to the statement.
1. A 13 year old growing 2 inches in 1 year.
2. Provides the cells that carry alleles from each parent.
3. Pollination of a flower
4. Production of new red blood cells in the bone marrow.
Part IV Gravity: Read the following information and then complete the exercise.
GRAVITY is the force of attraction between objects that is due to their masses and the
distance separating the objects.
EXERCISE: Evaluate each pair of objects. Circle the pair that has the greatest
gravitational pull. EXPLAIN underneath the pictures, why you chose this answer.
OR
moon
Earth
Earth
Sun
Explanation:
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Part V. Rock Cycle
The rock cycle below depicts 3 types of rocks, sedimentary rock, metamorphic rock and
igneous rock, change. However the processes that cause these changes to occur are missing.
Fill in the processes, listed below, next to the correct arrows. You may use some words more
than once.
Heat
erosion
melting
Solidification
weathering
cementation
deposition
pressure
compaction
Sedimentary
Rock
Igneous Rock
Metamorphic Rock
Part VI. Seasons
Analyze the illustration below and label with the correct season occurring for the United
States at each position. Winter, Spring, Summer, Fall
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PART VII: Punnett Squares
1. Write if the following genotypes are homozygous or heterozygous.
a. BB
b. Bb
c. Tt
2. A geneticist was predicting probability of different traits in rabbit offspring. He took a
homozygous floppy eared female rabbit and mated her with a homozygous straighteared male rabbit.
F = floppy ears
f = straight ears
What is the probability that the offspring of these 2 rabbits will have straight ears?
% Probability of straight eared offspring _________________
What is the % Probability of a homozygous genotype?
____________________________________________________
PART VIII: Law of Superposition
1. The law of superposition states that younger rock is positioned on top of older
rock. However, much of the time the earth shifts, erosion occurs and magma disrupt
the layers.
a. Which layer above is the youngest? Explain your answer.
b. Which layer is the oldest? Explain your answer.
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Part IX: Food Web
USE THE FOOD WEB BELOW TO ANSWER QUESTIONS
List the PRIMARY consumers shown in the food web.
List the SECONDARY consumers in the food web.
List the TERTIARY consumers in the food web.
List the producers shown in the food web.
What are 2 predator-prey relationships shown in the food web?
List any decomposers shown in the food web.
What would most likely happen if a disease killed the rabbits? Circle all correct answers.
a. An increase in the amount of plants and grass.
b. Foxes would move to another area due to a decrease in available food.
c. A decrease in dragonflies that live in the area.
d. Trout would become more plentiful.
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Part X: Relationships in Nature
Write the definition for the following terms and give an example of each. You may draw
pictures for your examples.
Term
Definition
Example
Symbiosis
Parasitism
Mutualism
Commensalism
Part XI: Linnaean System of Classification
Place and write the following categories of the Linnaean System in order from the
category where the organism have many differences to the category which includes
organisms have the most similarities.
CLASS
GENUS SPECIES
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KINGDOM
ORDER
PHYLUM
FAMILY
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PART XII: Landforms
1. Observe each picture below and document which type of landform is shown and
then simply describe how it is formed. You may use the words below to assist you.
The descriptions may need more than one word.
Landform words: glacier, mountain, dune, lake, delta, volcano, sink hole lake, alluvial
fan, coastline,
Causes words: erosion, deposition, weathering, silt, plate tectonics, gravity, uplift,
16383
_________________________
________________________
________________________
_________________________
_________________________
________________________
________________________
________________________
________________________
_______________________
________________________
________________________
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Part XIII: Variables
For his science fair experiment, Cole decided to determine how different types, of surface
material, affect how fast a matchbox car will go. He chose to use a tile floor, concrete patio
and carpet. He used the same car for each of the 20 trials. He measured the distances the
car went after riding down a 1-meter ramp.
What is Cole’s test (independent) variable? ______________________________________
What is Cole’s outcome (dependent) variable? ___________________________________
What must be kept constant (the same) for every trial? _______________________
____________________________________________________.
What do you predict will happen and explain why.
Part XIV. Scientific Method
Talisa was very frustrated. She was trying to make a jewelry box for her mother and it
fell apart as a result of the glue wasn’t strong enough. She decided that before she began
again, she would test different types of glue to determine which is the strongest. She
chose Glue A, Glue B and Glue C. She used Glue A to adhere 10 sets of pine boards, Glue B
to adhere 10 sets of oak boards and Glue C to adhere 10 sets of pine and oak boards.
a. What should Talisa change about her experiment that will make it more
credible/better?
b. Why should she make this change?
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Part XV: Analyzing DATA
CLASS:
DATE:
An oceanographer, from the University of Miami, hypothesized that there is no difference
in the salinity (salt content) of the Atlantic Ocean and the Mediterranean Sea.
Location
Atlantic Ocean
Mediterranean Sea
1
3600
3900
2
3640
3880
Measurements
3
4
5
3600 3670 3600
3800 3830 3890
6
3600
3900
Average
3610
3810
Complete the paragraph below:
The hypothesis that there is no difference in the salinity of the Atlantic Ocean and the
Mediterranean Sea is (supported or not supported). The data shows that:
Circle the correct response
________________________________________________________________________________________________________________.
Part XVI. Analyzing Graphs
The graph below shows the activity of the enzyme, Amylase, at different temperatures.
Answer the related questions.
1. At which temperature is amylase the least active? __________________________
2. At which temperature is amylase the most active? _________________________
3. At 60 C, what is the percent activity of the amylase? ________________________
4. What do you predict will happen to amylase activity at 100° C?
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Part XVII: Body Systems: Select function below and write next to the correct
body system.
Cardiovascular system _________________________________________________________________
Digestive system ________________________________________________________________________
Nervous system _________________________________________________________________________
Skeletal system __________________________________________________________________________
Muscular system _________________________________________________________________________
Functions
provides oxygen to body
controls the speed of the heart beats
eliminates waste
supports the body
movement of the body
Part XVIII. Analyzing Climate Data: The graph below shows climate data for the
city of Lauderhill. Analyze the graph and answer the related questions
http://pics2.city-data.com/w3q/prcq4124.png
Questions:
1. Which month averages the most precipitation? Please support your answer by
including data.
2. Which month averages the least amount of precipitation? Please support your
answer by including data.
3. Which month has the highest AVERAGE temperature? Please support your
answer by including data.
4. Which month has the lowest AVERAGE temperature? Please support your
answer by including data.
5. During which month is there the greatest difference between the Tamarac
average precipitation and the US average?
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