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DEOC 6th Grade Review

Total questions: 35

Worksheet time: 26mins

Name
Class
Date
1.

The above graph shows the average rainfall in inches for a town in Southern California. Which of the following statements is true regarding the graph?

a)

The months of January, February, and March all received more than 2.5 inches of rain.

b)

The biggest decrease in rainfall occurred between March and April.

c)

The months of May, June, and November all received less than 0.5 inches of rain.

d)

After the month of July, rainfall steadily increased each month.

2.

Luis tracked his lemon sales at his fruit stand in the chart above. Which of the following statements is correct based on the information in the graph?

a)

The number of lemons sold decreased between the months of August and December.

b)

More lemons were sold during the month of July than at any other time during the year.

c)

The fewest amount of lemons were sold during the month of October than at any other time during the year.

d)

The number of lemons sold increased between the months of January and August.

3.

Jennifer notices that lizards in the woods near her house change from green in the summer to brown during the winter. She thinks that maybe the lizards change color when there is less sunlight. She decides to test this idea with an experiment. She captures 20 lizards and places them into two boxes. She allows the natural sunlight to shine into one box and uncovers the other box for only 6 hours a day. She observes the lizards in both boxes for one month and records her observations.

a)

how much light the lizards receive

b)

the number of lizards in each box

c)

the color of the lizards in each box

d)

Do lizards eat more in the summer?

4.

We traveled to a race track and there are three cars there. We measured the maximum speed that each of them could reach in 10 minutes with the same stopwatch. What is the dependent variable?

a)

racetrack

b)

speed

c)

time

d)

stopwatch

5.

Susan is designing a scientific investigation. She carefully writes down everything that she needs to do in the experiment. She hopes that one day other science students will conduct the same investigation. Which BEST describes why is it important for scientists to replicate scientific investigations?

a)

Replication helps to simplify the steps of an investigation.

b)

Replication helps to show new ways to modify an investigation.

c)

Replication helps to clarify the question in an investigation.

d)

Replication helps to verify the results of an investigation.

6.

A scientist has submitted his findings to a scientific journal for publication. Other scientists can read about his findings and replicate his investigation. Why is replication important in science?

a)

Replication ensures that results are valid.

b)

Replication shows that scientists can be creative

c)

Replication is only performed on new ideas in science.

d)

Replication means that science knowledge can never change.

7.

Both research and scientific investigations are trying to answer a question. Which of the following would make something a scientific investigation and not just a research investigation?

a)

a set of controlled experiments

b)

a set of articles from an internet search

c)

a set of photographs from artists

d)

a set of interviews from news reporters

8.

Students are performing an experiment testing if the distance from a light source affects the time it takes a beaker of water to increase by 1oC. One group of students measures the temperature of the water every minute, and another group of students measures the temperature of the water every 10 minutes. Is it possible that students might end up with different results?

a)

As long as both groups take a measurement at the 10-minute mark, they should end up with the same results.

b)

As long as both groups measure in the same units, they should end up with the same results.

c)

They might have different results because the group measuring the temperature every minute could record the increase in temperature first.

d)

They might have different results because the group that measures every minute will have too much data will and not be able to keep track of it.

9.

Skyscrapers are a challenge for engineers because of their unique structure, the engineers have to use computer modeling to assist them in designing stable skyscrapers. Which of the following information provided through computer modeling would be most helpful for the engineers in designing a stable skyscraper?

a)

which city to build in

b)

when it should be built

c)

effects of different wind speeds

d)

a computer designed model of the finished product

10.

Which of the following statements best describes a scientific theory?

a)

A scientific theory is a single hypothesis supported by data that explain how a natural phenomenon occurs.

b)

A scientific theory is a law that explains how a natural phenomenon occurs, but it is not supported by data.

c)

A scientific theory is a single hypothesis that is not tested and is not supported by other scientists.

d)

A scientific theory is a group of hypotheses supported by data that explain why a natural phenomenon occurs.

11.

In 1928, Dr. Alexander Fleming was growing bacteria in Petri dishes for experimentation. Mold spores accidentally got into one of the dishes and started to grow. Fleming noticed that bacteria did not grow near the mold. The mold led to the development of the world's first antibiotic, penicillin.


What does the paragraph indicate about the scientific method and discovery?

a)

Discoveries are only made when the scientific method is followed.

b)

Discoveries can be accidental and not exactly follow the scientific method.

c)

The scientific method always leads to discoveries.

d)

The scientific method is the only process scientists use to answer questions.

12.

What is the hydrosphere primarily composed?

a)

gas

b)

magma

c)

rock

d)

water

13.

Which two spheres are interacting as wind causes waves in the ocean?

a)

atmosphere and hydrosphere

b)

biosphere and atmosphere

c)

geosphere and hydrosphere

d)

cryosphere and biosphere

14.

The timeline below shows how the use of lenses to magnify objects has changed over the last 2,000 years.


What does the timeline suggest about scientific knowledge over time?

a)

It suggests that scientific knowledge began when the first convex lens was developed, since complex lenses opened the door to all scientific studies.

b)

It suggests that scientific knowledge changes, as shown by the new discoveries made about lenses leading to improvements in their uses.

c)

It suggests that scientific knowledge does not change, because scientists work independently of each other and do not build on each other's ideas.

d)

It suggests that scientific knowledge is replaced and not modified, as shown by the single lens replacing multiple lenses.

15.

Beaches and shorelines are constantly undergoing change from __________.

a)

marine life

b)

waves and currents

c)

high temperatures

d)

mixture of gases in the air

16.

Which process adds moisture to the atmosphere?

a)

precipitation

b)

infiltration

c)

transpiration

d)

condensation

17.

Which of the following processes would have the most immediate impact on the shape of beaches in Florida?

a)

deposition of sand by wind

b)

erosion of boulders by waves

c)

seismic waves

d)

volcanic eruptions

18.

Heat is transferred through convection currents in which of the following?

a)

the ocean

b)

Earth's mantle

c)

Earth's atmosphere

d)

All of the above

19.

Which type of stream is most likely to cause the greatest amount of erosion?

a)

a quickly moving stream with a small amount of water

b)

a slowly moving stream with a small amount of water

c)

a quickly moving stream with a large amount of water

d)

a slowly moving stream with a large amount of water

20.

Florida is the most humid state in the nation. Which statements below best explains why this is true?

a)

Cool ocean breezes hold a lot of water as humidity as they move inland.

b)

Florida's coasts are either the warm Atlantic Ocean or Gulf of Mexico. Warm air above warm water holds a lot of moisture that moves inland.

c)

Florida's coasts are either the warm Atlantic or Pacific Oceans. Warm air above warm water holds a lot of moisture that moves inland.

d)

It rains in Florida every day of the year so the air is always saturated with water.

21.

Which of the following correctly describes a feature of Earth's atmosphere that helps to protect life?

a)

It creates all of the water vapor available on Earth.

b)

It catches and contains all asteroids near Earth.

c)

It contains ozone and blocks most ultraviolet radiation.

d)

It stores harmful gases in the outermost layer.

22.

Choose the sentence below that best describes how weather differs from climate.

a)

Weather can be described globally, but climate cannot.

b)

Weather describes the prevailing conditions in a particular location on a particular date, but climate describes the prevailing conditions over longer periods of time.

c)

Climate describes the prevailing conditions in a particular location on a particular date, but weather describes the prevailing conditions over longer periods of time.

d)

Temperature is used to describe weather but not climate.

23.

Temperatures at the poles

a)

are slightly lower than at the equator, creating seasons.

b)

are the same as at the equator, creating ocean currents.

c)

are much higher than at the equator, causing rain to form.

d)

are much lower than at the equator, causing winds to form.

24.

Which organelle in a plant cell captures radiant energy from the Sun?

a)

chloroplast

b)

mitochondrion

c)

ribosome

d)

nucleus

25.

Based on cell theory, the lowest level of organization is

a)

a cell

b)

a molecule

c)

an organelle

d)

a specific tissue

26.

A standardized taxonomic system, written in Latin, assigns each species a unique name. This action helps biologists avoid

a)

classifying species

b)

researching species.

c)

confusing species.

d)

naming species.

27.

In all living organisms, cells function __________.

a)

differently

b)

similarly

c)

partially

d)

in unison

28.

What does the cell theory state?

a)

that animal cells do not have membranes

b)

that every cell has a wall surrounding it

c)

that plant cells do not have a nucleus

d)

that all living things are made of cells

29.

When a duck dives into cold water, the capillaries in its skin constrict and move deeper below the surface of the skin. This reaction is an example of...

a)

homeostasis.

b)

excretion.

c)

respiration.

d)

synthesis.

30.

Which description of bacteria or viruses is true?

a)

Viruses are beneficial to all living things.

b)

Bacteria need a host cell to reproduce.

c)

Bacteria are harmful to all living things.

d)

Viruses can cause many different illnesses.

31.

A meteor moving through space speeds up as it gets closer to Earth. What force causes the meteor's speed to increase the closer it gets to Earth?

a)

gravity

b)

friction

c)

electrical attraction

d)

magnetic attraction

32.

Which statement best describes the forces of an object moving upward?

a)

The forces are unbalanced, and there is more force pushing down on the object than pulling up.

b)

The forces are balanced, and there is more force pushing down on the object than pulling up.

c)

The forces are balanced, and there is more force pushing up on the object than pulling down.

d)

The forces are unbalanced, and there is more force pushing up on the object than pulling down.

33.

A large rock is balanced at the top of the mountain. There is an earthquake, and the rock falls to the bottom of the mountain. What type of energy is being transformed as the rock is falling?

a)

Heat energy transforms into kinetic energy.

b)

Potential energy transforms into kinetic energy.

c)

Potential energy transforms into light energy.

d)

Kinetic energy transforms into potential energy.

34.

Which of the following statements is true about the two graphs above?

a)

Graph A shows an increase in speed.

b)

Graph B shows a decrease in speed.

c)

Both graphs show a constant speed.

d)

Both graphs show a change in speed.

35.

A group of objects are the same distance from Earth, but they each have a different mass. Which of the objects would have the greatest gravitational pull on Earth?

a)

The object with a mass of 0.2 kg.

b)

The object with a mass of 2 kg.

c)

The object with a mass of 20 kg.

d)

The object with a mass of 200 kg.