1st Quarter Science Journal

Friday September 2, 2011 #1

Please list your name explain 5 things you did this summer.

Tuesday September 6, 2011 #2

Pick a quality that you like about yourself and write a paragraph

explaining it.

Wednesday September 7, 2011 #3

Write about something you have found interesting in Science in the past.

Thursday September 4, 2011 #4

You received a 78% on your last test. On this test you hope to receive at least an 85%. What will your

average for tests be? If tests are 30% of your quarterly grade, and you have 70 points from your other grades,

what will your quarter grade be?

Friday September 5, 2011 #5

A special lottery is to be held to select the student who will live in the only deluxe room in a dormitory. There are 100 seniors, 150 juniors, and 200 sophomores who applied. Each senior's name is placed in the lottery 3 times; each junior's name, 2 times; and each sophomore's name, 1 time. What is the probability that a senior's name will be chosen?

a.) 1/8 b.) 2/9 c.) 2/7 d.) 3/8 e.) 1/2Top of Form

Monday September 12, 2011 #6

A.3.2.1

Use the model diagrams below to answer the question.

Models of Two Different Regions on Earth

The diagrams show models of two different systems that represent different

regions on Earth. Which question would these models most likely help students

answer?

A. How do bodies of water affect the average daily high temperature

of a region? *

B. When does the hottest time of the day occur for regions

at different latitudes?

C. What effect does the ocean have on the amount of rainfall

for a region?

D. Where are desert regions located on a continent in relation

to bodies of water?

Tuesday September 13, 2011 #7

Use the picture below to answer the question.

How is this fish adapted for weedy areas in freshwater lakes?

A. The upper fin of the fish looks like waves of water.

B. The lower fins of the fish look like the legs of a turtle.

C. The stripes of the fish look like plants in the water. *

D. The front of the fish looks like the surface of a rock.

Wednesday September 14, 2011 #8

B.2.2.2

Which statement best describes a dominant gene?

A. It is the gene that produces mutations.

B. It is the gene that produces desirable traits.

C. It is the gene that masks a recessive gene. *

D. It is the gene that is masked by a recessive gene.

Thursday September 15, 2011 #9

B.3.3.3

Which statement describes how recycling aluminum cans positively affects the environment?

A. Recycling uses energy.

B. Recycling makes solid waste.

C. Recycling conserves mineral resources. *

D. Recycling produces air pollution.

Friday September 16, 2011 #10

C.1.1.2

Use the table below to answer the question.

A student is given a mixture of 200 plastic beads that all look alike. Each bead is made from one of two types of plastic: plastic X or plastic Y. Which statement describes what will happen when the mixture of beads is placed in water?

A. Both kinds of plastic beads will float in the water.

B. Both kinds of plastic beads will sink in the water.

C. Plastic X beads will float in the water and plastic Y beads will sink.

D. Plastic X beads will sink in the water and plastic Y beads will float. *

Monday September 19, 2011 #11

C.2.2.1

Which energy source can be described as having the greatest impact on

Earth’s living environments?

A moving air

B moving water

C the Sun *

D geothermal

Tuesday September 20, 2011 #12

C.3.1.2

Use the diagram below to answer the question.

An object is lifted into the air and dropped. Which statement best describes the object’s energy as it falls through the air from the stationary position at height X?

A. At height X, the energy is potential, which changes to kinetic as the object falls. *

B. At height X, the energy is kinetic, which changes to potential as the object falls.

C. At height X, the energy is potential and kinetic, and the object loses potential

energy as it falls.

D. At height X, the energy is potential and kinetic, and the object loses kinetic energy

as it falls.

Wednesday September 21, 2011 #13

D.1.3.4

Which type of moving water provides the best environment for organisms that decompose dead organic matter?

A. a steep mountain stream that flows when snow melts in the spring

B. a shallow river with cold, clear water and a sandy bottom

C. a slow-moving river with a wide, open channel *

D. a rapidly moving stream with a narrow, steep channel

Thursday September 22, 2011 #14

D.3.1.1

Which statement describes two factors that have the greatest influence on tides?

A. Earth rotates on its axis once each day, and the gravity of the Moon causes the

oceans to bulge. *

B. Earth rotates on its axis once each year, and the gravity of the Moon causes the

oceans to bulge.

C. Earth revolves around the Sun once each year, and the gravity of Earth causes the

oceans to bulge.

D. Earth revolves around the Sun once each day, and the gravity of the Sun causes the

oceans to bulge.

Friday September 23, 2011 #15

D.3.1.2

Which planet has the greatest role in changing the direction of a comet’s path?

A. Earth, because of its atmosphere of nitrogen and carbon dioxide.

B. Mars, because of its position near the asteroid belt.

C. Jupiter, because of its strong gravitational force. *

D. Saturn, because of its significant ring structure.

Monday September 26, 2011 #16

A.2.1.2

Use the figures below to answer the question.

An experiment is set up to investigate how different ramps affect a ball’s speed.

Part A: Create a question that could be tested using these two ramps.

Part B: State a hypothesis that could scientifically test the question.

Tuesday September 27, 2011 #17

C.3.1.3

Use the diagram below to answer the question.

Part A: Why would a worker use a ramp rather than lift the box?

Part B: Choose either ramp X (7 meters long) or ramp Y (3 meters long) and explain

the benefits of using that ramp instead of the other ramp.

Wednesday September 28, 2011 #18

D.3.1.2

Which statement explains why daylight and darkness occur on earth.

a. The Earth rotates on its axis. *

b. The Sun rotates on its axis.

c. The Earth’s axis is tilted.

d. The Earth revolves around the Sun.

Thursday September 29, 2011 #19

Frank and Jerry are moving a refrigerator. Frank pushes with a certain force in one direction. Jerry pushes with half the amount of force in the opposite direction. How will the refrigerator MOST LIKELY move?

a. The refrigerator will move in the direction in which Frank is pushing.

b. The refrigerator will move in the direction in which Jerry is pushing.

c. The refrigerator will not move.

d. The refrigerator will fall over.

Friday September 30, 2011 #20

Engineers design racecars with as little mass as possible. Why is it important for a racecar to have so little mass?

a. Cars with less mass are less likely to crash.

b. A car with less mass exerts more force when hit.

c. A car with less mass accelerates faster.

d. Lighter cars are less expensive to build.

Monday October 3, 2011 #21

When you step on hot pavement, you burn the bottom of your feet. This is an example of which kind of energy transfer?

a. Convection in a liquid.

b. Convection in a gas.

c. Conduction. *

d. Radiation.

Tuesday October 4, 2011 #22

Jillian wants to find out how the amount of fertilizer added to the soil affects plant growth. Which of these would be her independent variable?

a. How tall each of the plants grows.

b. The amount of fertilizer she adds to the soil. *

c. The size of the pots in which the plants grow.

d. The amount of water she gives each plant.

Wednesday October 5, 2011 #23

If a bumper car has a constant velocity of 1.4 m/s east, you know that………

a. The car is accelerating at a rate of 1.4 meters per second.

b. The car is not moving.

c. The car’s speed is 1.4 meters per second and its direction is west.

d. The car’s speed is 1.4 meters per second and its direction is east. *

Thursday October 6, 2011 #24

Which of the following statements is true about Earth’s plates?

a. They rise and fall within Earth’s mantle?

b. They are made of soft rocks that flow like liquid.

c. They are pieces of rock that never move.

d. They are pieces of rock that constantly move. *

Friday October 7, 2011 #25

Earth’s tectonic plates are moved by

a. the wind.

b. convection currents in the ocean.

c. convection currents in the crust.

d. convection currents in the mantle. *

Tuesday October 11, 2011 #26

Why do different parts of Earth’s surface receive different amounts of energy from the sun?

a. Earth’s surface is curved. *

b. Earth rotates.

c. Not all solar energy is absorbed.

d. Ocean currents carry energy away.

Wednesday October 12, 2011 #27

S8.C.2.1.3

The diagrams below represent particles of the same substance in three different phases.

Study the diagrams and the statement shown above. Which diagram best represents particles in the solid phase?

a. diagram C *

b. diagram A

c. None of the diagrams represent this phase.

d. diagram B

Thursday October 13, 2011 #28

S8.C.1.1.3

John experiments with a piece of paper. He folds the paper in half, then tears the paper along the fold. He uses scissors to cut the paper into small pieces. Finally, he puts a lit match to the paper pieces and watches them burn.

Read the description of John’s experiment above. Which of the following is TRUE about John’s experiment?

a. Burning does not change the chemical properties of the paper.

b. No chemical changes happened in this experiment.

c. Cutting the paper does not cause a chemical change. *

d. Folding the paper changes its chemical properties.

Friday October 14, 2011 #29

S8.C.1.1.3

Rosa added drops of weak hydrochloric acid (HCl) to four rocks and minerals. Her data are shown in the table.

Adding Hydrochloric Acid to
Some Rocks and Minerals
Rock/Mineral / Reaction with
Hydrochloric Acid (HCl)
Quartz (SiO2) / None
Sandstone (SiO2) / None
Limestone (CaCO3) / Fizzes, bubbles produced
Corundum (Al2O3) / None

Refer to the table above. Which rock or mineral reacts chemically with hydrochloric acid?

a. limestone * c. corundum

b. sandstone d. quartz

Monday October 17, 2011 #30

S8.C.2.1.3

Which of the following statements about liquid matter is true?

a. Atoms of a substance in the liquid phase can be compressed into a smaller

volume.

b. Atoms of a substance are closer together in the liquid than the gas phase. *

c. Atoms of a liquid are locked together in a rigid structure and cannot flow.

d. Atoms of a liquid do not have enough kinetic energy to move around each other.

Tuesday October 18, 2011 #31

S8.B.3.1.2

Scientists predict that if the Earth’s temperature were to rise by only a few degrees, such a change could cause the ice caps in Antarctica and Greenland to completely melt. This would cause sea-levels to rise substantially.

Based on the scenario above, how would an increase in global temperatures affect the salinity of oceans?

a. Warmer temperatures would have no impact on the salinity of the oceans.

b. Warmer temperatures would change the type of salt in the oceans.

c. Warmer temperatures would lead to a decrease in the salinity of oceans. *

d. Warmer temperatures would lead to an increase in the salinity of oceans.

Wednesday October 19, 2011 #32

S8.B.2.1.4

HeidiTakashi is a farmer who grows corn. About 10 years ago, Ms. Takashi began spraying her fields with herbicide, a chemical that kills plants, to kill weeds in the corn field. For a few years the herbicide killed nearly all of the weeds in Ms. Takashi’s corn field. One year, Ms. Takashi noticed that some weeds were growing even after being sprayed with herbicide. The next year, even more weeds were still alive after herbicide-spraying. Based on what you know about how organisms adapt to their environment, what is the most likely reason to explain the results of Ms. Takashi’s use of herbicide?

a. The weeds underwent a mutation which led to a resistance to the herbicide. *

b. The weeds were new species of weeds.

c. The herbicide was still effective on Ms. Takashi’s weeds.

d. The herbicide underwent a chemical change.

Thursday October 20, 2011 #33

S8.B.2.1.4

In England in the mid-1800s, a dramatic change happened to the peppered moth population. Before 1845, peppered moths were light colored with dark specks. Their color allowed them to blend into the light gray bark of the trees. After 1845, coal smoke from local factories blackened the bark of trees. Dark colored moths began to appear. After several generations, 90% of the total moth population was dark.

Study the information above. What is a likely reason for the change in the peppered moth population?

a. The appearance of dark-colored moths was unrelated to the change in environment.

b. Dark color in moths is an example of incomplete dominance.

c. After 1845, dark-colored moths were less likely to survive than light-colored moths.

d. The dark-colored moths blended in better with the trees and were not eaten by birds. *

Friday October 21, 2011 #34

S8.B.3.1.1

The picture below shows the food chain in a meadow.