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6th Grade Science Review

Total questions: 80

Worksheet time: 52mins

Name
Class
Date
1.

All living things are composed of one or more cells.

a)

True

b)

Falso

2.

The ________ controls the movement of materials into and out of the cell.

a)

cell membrane

b)

nucleus

c)

cytoplasm

d)

mitochondrion

3.

What structure in a plant cell enables the cell to capture energy from the Sun?

a)

cell wall

b)

chloroplast

c)

mitochondrion

d)

central vacuole

4.

In which organelle are molecules packaged in preparation for distribution throughout the cell?

a)

mitochondrion

b)

vacuole

c)

cytoskeleton

d)

Golgi apparatus

5.

____________ is the gel-like substance found in a cell?

a)

cytoplasm

b)

chlorophyll

c)

water

6.

The _______________ surrounds the cell material.

a)

chromosome

b)

cell membrane

c)

cytoplasm

7.

What is the basic unit of structure and function in all living things?

a)

cell

b)

organism

c)

atom

d)

plasma

8.

The __________ is the control center of a cell.

a)

mitochondrion

b)

nucleus

c)

vacuole

9.

Which cell part protects and provides shape for a plant cell?

a)

nucleus

b)

mitochondrion

c)

vacuole

d)

cell wall

10.

An individual's "fingerprint" is carried by the

a)

cell membrane

b)

DNA

c)

mitochondria

d)

RNA

11.

Both plant and animal cells have a cell membrane.

a)

True

b)

False

12.

Which statement about plant and animal cells is correct?

a)

Animal cells are irregular in shape; plant cells are regular in shape.

b)

Animal cells are regular in shape; plant cells are irregular in shape.

c)

Both animal and plant cells are irregular in shape

d)

Both animal and plant cells are regular in shape.

13.
How many cells do you have in your body?
a)
hundreds
b)
thousands
c)
millions
d)
trillions
14.

A Tree

a)

alive

b)

not alive

15.
 Which system is the stomach in?
a)
respiratory
b)
digestive
c)
nervous
d)
excretory
16.
 What is the main function of the respiratory system?
a)
take in oxygen and exhale waste like carbon dioxide
b)
move nutrients throughout the body
c)
take in carbon dioxide and exhale oxygen
17.
Where does digestion start?
a)
stomach
b)
mouth
c)
esophagus
18.
Which systems main function is to allow movement of the body?
a)
muscular
b)
digestive
c)
skeletal
d)
excretory
19.
The smallest units or parts of living things; the body's building blocks.
a)
cells
b)
organs
c)
tissues
d)
system
20.
A collection of the same kinds of cells working together to do the same job.
a)
cells
b)
tissues
c)
organs
d)
systems
21.
Your body systems work separately and do not effect each other.
a)
true
b)
false
22.
Which representation would show the organization of life from simplest to the most complex?
a)
Heart muscle tissue, cardiovascular system, heart muscle tissue
b)
cardiovascular system, heart muscle cells, heart muscle tissue
c)
cardiovascular system, heart tissue, heart cells
d)
Heart muscle cells - heart muscle tisse, heart, cardiovascular system
23.
A scientist is trying to decide whether an organism is unicellular or multicellular.  Which information would help the scientist most to make her decision?
a)
size of the cells of the organism
b)
what the organism eats
c)
how many types of cells are in the organism
d)
how fast the organism grows
24.
Which best explains why both cats and humans are multicellular organisms?
a)
They get energy from many food sources.
b)
They get energy from a single food source
c)
They need only one cell to meet their basic needs.
d)
They need many cells working together to meet their basic needs.
25.
Which body systems work together to allow the body to move?
a)
nervous and skeletal
b)
muscular and skeletal
c)
nervous and circulatory
d)
muscular and circulatory
26.

Aa, DD, Bb, yy are all examples of _______

a)

genotypes

b)

phenotypes

27.

The physical expression of a trait is called the ...

a)

genotype

b)

phenotype

28.

Genotype: TT is ...

a)

homozygous dominant

b)

homozygous recessive

c)

heterozygous

29.

Cross 2 heterozygous tall pea plants. Tall (T) is dominant to short (t). What fraction of the offspring do you predict will be tall?

a)

1/4

b)

2/4

c)

3/4

d)

4/4

30.

Genotype: Aa is ....

a)

homozygous dominant

b)

homozygous recessive

c)

heterozygous

31.

Which set of alleles are considered heterozygous?

a)

HH

b)

Hh

c)

hh

32.

Which of the following is a PHENOTYPE for flower color in pea plants?

a)

Pp

b)

PP

c)

Purple

33.
A red flowered plant (RR) breeds with a White flowered plant (WW). The gene for petal color in these plants expresses incomplete dominance.  What percentage of the offspring will have pink (RW) flowers?
a)
0%
b)
25%
c)
50%
d)
100%
34.

In humans, freckles (F) on the skin are dominant to no freckles (f).  If a heterozygous parent and a recessive parent conceive, what is the chances of having a child with NO FRECKLES?

a)

0%

b)

50%

c)

100%

35.

In a population of bees, long wings (L) are dominant over short wings (l).  Bees with long wings are ...

a)

heterozygous only (Ll)

b)

homozygous 

dominant only (LL)

c)

heterozygous or 

homozygous 

dominant (LL or Ll)

36.

In guinea pigs, the allele for rough coat (R) is dominant over the allele for smooth coat (r).  A homozygous dominant guinea pig and a homozygous recessive guinea pig are mated.

What would be the phenotype of the offspring?

a)

100% rough coat

b)

100% smooth coat

37.

In the problem shown, what must the genotype of the missing parent be?

a)

BB

b)

Bb

c)

bb

38.

What warms up the fastest?

(a)  

39.

What cools the slowest?

(a)  

40.

What is the transfer of thermal energy through electromagnetic waves?

a)

Conduction

b)

Convection

c)

Radiation

d)

None of the above

41.

Why is it warmer at the equator than the poles?

a)
The equator has a thicker atmosphere than the poles.
b)
The equator has more landmass than the poles.
c)
The equator is closer to the sun than the poles.
d)
The equator receives more direct sunlight than the poles.
42.

What is the transfer of thermal energy between materials by the collision of particles?

a)

Conduction

b)

Convection

c)

Radiation

d)

None of the above

43.

What is the measure of reflectivity?

a)

Albedo

b)

Albino

c)

Reflection

d)

Absorption

44.

Light colored surface have (a)   albedo.

45.

How does air move?

a)

Low to High

b)

North to South

c)

West to East

d)

High to Low

46.

What creates wind?

a)
Wind is generated by the gravitational pull of the moon
b)
Wind is created by the movement of clouds
c)
Air movement from high pressure to low pressure
d)
Wind is caused by the rotation of the Earth
47.

What type of wind is near the poles and moves from east to west?

a)

Polar Easterlies

b)

Prevailing Westerlies

c)

Trade Winds

d)

Prevailing Easterlies

48.

What type of wind do we have in the United States?

a)

Polar Easterlies

b)

Prevailing Westerlies

c)

Trade Winds

d)

Prevailing Easterlies

49.

What type of winds are found near the equator?

a)

Polar Easterlies

b)

Prevailing Westerlies

c)

Trade Winds

d)

Prevailing Easterlies

50.

What causes wind to move in a curved path rather than a straight line?

a)
Coriolis effect
b)
Magnetic force
c)
Friction
d)
Gravity
51.

What type of water is the densest?

a)

Warm, Fresh Water

b)

Warm, Salt Water

c)

Cold, Fresh Water

d)

Cold, Salt Water

52.

The transfer of heat by the movement of a fluid, hot rises, cool sinks

a)

Conduction

b)

Convection

c)

Radiation

53.

The boiling of water, where hot water moves to the surface after being heated near the flame at the bottom of a pot is an example of

a)

Conduction

b)

Convection

c)

Radiation

54.

The total kinetic and potential energy of all the particles of an object

a)

Electromagnetic Wave

b)

Greenhouse Effect

c)

Thermal Energy

d)

Electromagnetic Radiation

55.

The movement of air from land to water

a)

Wind

b)

Jet Stream

c)

Land Breeze

d)

Sea Breeze

56.

The movement of air from water to land

a)

Wind

b)

Jet Stream

c)

Land Breeze

d)

Sea Breeze

57.

A large stream of moving water that flows through the ocean

a)

Current

b)

Coriolis Effect

c)

El Nino

d)

La Nina

58.

As surface currents flow towards the poles, they become more dense and become deep ocean currents. These deep ocean currents flow back towards the equator forming a loop called what?

a)

Cyclones

b)

Currents

c)

Global Ocean Conveyor

d)

Gyre

59.

Weather is a ............. condition of a certain place during a certain time.

a)

long term

b)

short term

c)

water cycle

d)

none of the above

60.

Wind moves from areas of .............. to areas of ...............?

a)

high pressure to low pressure

b)

low pressure to high pressure

61.

What happens when a high pressure system comes in contact with Earth?

a)

it gets hot

b)

it gets cold

c)

shows the temperature and humidity of the area below it

d)

a hurricane forms

62.

How are air masses formed?

a)

when low pressure systems linger over an area

b)

when the air is cold

c)

when the air is hot

d)

when high pressure systems linger over an area

63.

What type of air masses forms over oceans?

a)

arctic

b)

continental

c)

maritime

d)

tropical

64.

What type of air masses form over land?

a)

arctic

b)

maritime

c)

continental

d)

tropical

65.

If it is drizzling rain outside, what type of front has occured?

a)

Warm Front

b)

Cold Front

c)

Maritime

d)

Polar

66.

Uh Oh! Severe Thunderstorm is happening. What type of front has occurred?

a)

Cold Front

b)

Warm Front

c)

Tropical

d)

Continental

67.

What can you predict about Texas weather from reading this map

a)

Texas is Hot

b)

Texas is Cold

c)

Texas has cloudy skies

d)

Texas has clear skies

68.

What can yo predict about Texas weather from this map

a)

Texas is Hot

b)

Texas is Cold

c)

Texas has clear skies

d)

Texas has cloudy skies

69.

Which is used to measure wind speed

a)
b)
c)
d)
70.

What is considered the driving force for Earth's climate

a)

Rain

b)

Moon phases

c)

Earth Rotation

d)

The Sun

71.

Where is the Gulf Coastal States receiving its warm front from?

a)

Tropical currents

b)

Antartic currents

c)

Artic Jetstream

d)

Pacific currents

72.

Which best describes this image

a)

Convection Current

b)

Conduction Current

c)

Solar Cycle

d)

Lunar Cycle

73.

1. This side of the mountain is dry and desert like because of the rain shadow effect.

a)

Leeward

b)

Sideward

c)

Windward

d)

Land

74.

On the leeward side of a mountain, you might find _____.

a)

Heavy rainfall

b)

Desert

c)

More vegetation

d)

More snow

75.

What landform causes the rain shadow effect?

a)

Mountains

b)

Lakes

c)

Plains

d)

Valleys

76.

This side of the mountain is where the wind originates and evaporation occurs

a)

windward

b)

leeward

c)

rain shadow

d)

prevailing winds

77.

The opposite side of the leeward side of a mountain is called the windward side. What are the conditions on the windward side of a mountain?

a)

it is warm and dry

b)

it is wet & cool

c)

it is warm and wet

d)

it is cool and dry

78.

Which mountain range is responsible for the rain shadow in Tibet, China, and India?

a)

Himalaya

b)

Andes

c)

Rocky Mountains

d)

Alps

79.

As air rises, it expands. This expanding air also ______.

a)

warms and condenses

b)

cools and condenses

80.

How would this barrier affect the climate on the leeward side?

a)

temperatures are warm and precipitation low

b)

temperatures are warm and precipitation high

c)

cold temperatures and high precipitation

d)

extremely cold and low precipitation

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