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From the Genetics Summative Assessment: 7th Grade
Pedigree for Spotted Noses and Unspotted Noses
Key
------Female
A
------Male
B
colored in indicates spotted nose
C
D
E
F
?
G
H
I
J
K
L
1. This pedigree shows a family of fictional organisms that have either
plain or spotted noses. Individuals D, F and K have spotted noses.
Use this pedigree to answer the following questions.
a.) Are spotted noses the result of a dominant or recessive gene?
do you know?
How
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b.) What are the genotypes of individuals A and B?
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c.) If individual C’s father had a spotted nose, what is the chance that
individual H has a spotted nose? Use a Punnett square to help answer
your question.
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d.) Individuals E and F are expecting a third offspring. What is the chance
that the offspring will be male? Support your answer.
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2. Demetrius looks very similar to his father. Did he receive more
genetic information from his father than from his mother? Support
your decision.
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From Properties of Matter Summative Assessment: 7th Grade
The following graph shows the solubility of a sweetener in water. Point S on
the graph represents a saturation point of the sweetener in water.
a. Using information from the graph, how could you get more sweetener to
dissolve in the water? Use specific data from the graph to support your
suggestion.
Mass of Sweetener in
Grams/5 mL Water
Solubility of Sweetener
10
9
8
7
6
5
4
3
2
1
0
S
0
4
8
12 16 22 26 32 36 40 44 48 52 56 60 64 68 72
Temperature of Water in Degrees Celsius
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b. What is happening to the particles in the solution to allow a greater
amount of solute to be added?
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From Watershed Summative Assessment: 7th Grade
Part I. Water Cycle
1. Below is a picture from an elementary science textbook that illustrates the
movement of water. What additions would you make to the illustration to
demonstrate a more complete understanding of the movement of water?
Be sure to include appropriate labels in your illustration.
2. Explain the path water travels in your diagram.
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3. Clay, gravel, and sand are examples of Earth’s materials. How does
the particle size of these Earth materials determine the rate at which
water moves? You may include a diagram in your response.
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Properties of Matter: Conservation of Mass
A student measured the mass of a beaker. She put some water into the beaker
and, after carefully measuring its mass again, placed it in a warm place for 3
days. After 3 days, she again measured the mass of the beaker and water.
The results she obtained are shown in Table 1:
Table 1 Mass of Beaker and Water
Mass of the Beaker
Mass of the Beaker + Water
Mass of the Beaker + Water After 3 Days
145.6 g
205.6 g
182.3 g
Use this information to answer questions 1 through 4.
1. What was the volume of the water she placed in the beaker?
a. 351.2 g
b. 60.0 g
c. 351.2 mL
d. 60.0 mL
2. What was the change in the mass of the water over the 3-day
period?
a. -36.7 g
b. -60.0 g
c. -23.3 g
d. +60.0 g
3. Which one of the following statements best explains the change in
mass?
a. The water absorbed air.
b. Some of the water evaporated and escaped into the air.
c. Some of the water disappeared.
d. Some of the water was lost as hydrogen and oxygen gases.
4. If the student had used a sealed bottle, how would the mass of
the water at the end of 3 days be different? It would—
a. Show the same change as in the experiment described.
b. Increase.
c. Decrease.
d. Show no change.
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Properties of Matter: Density
The graduated cylinder shown in the diagram contains three liquids labeled 1,
2, and 3.
The objects (A, B, and C) in the cylinder are made from three different
substances. All three objects have the same volume. Use the information in
the diagram to answer questions 1 and 2.
1. Using the information available in the diagram,
determine which one of the following statements
is correct.
a. Object C is heavier than Object B.
b. Object B is less dense than Liquid 1.
c. Object B is less dense than Liquid 3.
d. Objects B and C have the same density.
Explain your answer:
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2. Of all the liquids and objects in the graduated
cylinder, which has the greatest density?
a. Liquid 1
b. Object A
c. Object C
d. Liquid 3
Explain your answer:
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Properties of Matter: Solubility
Two students were investigating how much sugar dissolved in 10 mL of water at
room temperature. They measured the mass of a jar containing sugar. They then
added small quantities of sugar to a test tube containing 10 mL of water and
shook the tube until the sugar dissolved in the water. They continued to add
sugar until no more dissolved. Their results are recorded in Table 1.
Table 1: Mass of Jar and Sugar
Mass of empty jar
Mass of jar and sugar at the start of the inquiry
Mass of jar and sugar at the end of the inquiry
40.0 g
64.0 g
61.8 g
1. At the end of the experiment, how could the students know that no
more would dissolve? Because they could—
a. see the solution was transparent.
b. check the solubility of sugar at that temperature.
c. see the solution was thick and sticky.
d. see the sugar at the bottom of the tube.
2. How much sugar was added to the water?
a. 61.8 g
b. 21.8 g
c. 4.0 g
d. 2.2 g
3. During the course of the inquiry, the students made several
measurements. Which measurement did they NOT need to make?
a. The volume of the water.
b. The mass of the jar.
c. The mass of the jar and the sugar at the start of the inquiry.
d. The mass of the jar and the sugar at the end of the inquiry.
4. This inquiry gives only an approximate value for the solubility of
sugar in water. The main reason this value is not exact is because—
a. the volume of water used was too small.
b. not all of the sugar added was dissolved.
c. a saturated solution was not formed.
d. not much sugar dissolves at room temperature.
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Properties of Matter: Phases of Matter/Mixtures and Solutions
1. Describe the difference in the spacing and the amount of energy
between the particles of a solid, a liquid, and a gas.
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2. Peter Piper needs to use salt to pickle his peppers. Unfortunately
he has no salt. Bo Peep tells him not to worry since he lives less
than 200 meters from the ocean. Explain what steps Peter must
perform to obtain the ingredient he needs from the ocean water.
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