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Y9 Science GL revision

Total questions: 100

Worksheet time: 2hrs 32mins

Name
Class
Date
1.
control the cell's activities; contains the cell's DNA
a)
mitochondria
b)
cell membrane
c)
nucleus
d)
golgi body
2.
surrounds the cell; controls what enters/leaves cell; maintains homeostasis
a)
vacuole
b)
cell wall
c)
cell membrane
d)
lysosome
3.
Identify this structure that surrounds the entire cell.
a)
cell wall
b)
cell membrane
c)
sap vacuole
d)
cytoplasm
4.

This fluid in the cell is where the organelles are found. It contains water and chemicals the cell needs.

a)

Blood

b)

Cytoplasm

c)

Plasma

d)

Vacuole

5.

What is the function of the excretory system?

a)

move the body

b)

remove waste from the body

c)

break down food

d)

bring in oxygen and remove carbon dioxide

6.

The function of the digestive system is to...

a)

support and protection

b)

deliver oxygen to the cells and remove waste

c)

move the body

d)

break down food

7.

The function of the circulatory systems is to...

a)

deliver oxygen to the cells and remove waste from the cells

b)

break down food

c)

support and protection

d)

move the body

8.

What is the level of organization?

a)

cells - tissues - organs - organ systems - organism

b)

cells - organs - tissues - organ systems - organism

c)

organism - organ systems - organs - tissues - cells

d)

cells - tissues - organs - organism - organ systems

9.

What are the parts of the respiratory system?

a)

nasal cavity, trachea, bronchi, lungs

b)

heart, veins, arteries, and capillaries

c)

soft and compact bones

d)

mouth, esophagus, stomach and intestines

10.

In the food web shown, who is the secondary consumer?

a)

grass

b)

mouse

c)

rabbit

d)

fox

11.

For an energy pyramid, the 10% rule states that

a)

10% of the energy is transferred from one organism to the next.

b)

10% of the energy is gained.

c)

10% of the animals will starve.

d)

10% of the producers are eaten.

12.
Which one is NOT an example of a decomposer?
a)
mushroom
b)
leaves
c)
mold
d)
worm
13.
an organism that can produce its own food through photosynthesis
a)
consumer
b)
heterotroph
c)
autotroph
d)
herbivore
14.

Which organisms needs to find it's own food?

a)

autotroph

b)

hetertroph

15.

Where do plants get the energy for photosynthesis to take place?

a)

nutrients in the soil

b)

the sun

c)

chlorophyll

d)

bee pollination

16.

What 3 things do plants need for the process of photosynthesis?

a)

Sunlight, oxygen and sugar.

b)

Water, soil and oxygen.

c)

Sunlight, carbon dioxide and water.

d)

Sunlight, soil and water.

17.
What gas  do plants give off after conducting photosynthesis that humans/animals need in order to live?
a)
Oxygen
b)
Carbon
c)
Nitrogen
d)
Hydrogen
18.

The products of photosynthesis are...

a)

glucose and oxygen

b)

carbon dioxide and water

19.

The reactants to photosynthesis are...

a)

glucose and oxygen

b)

carbon dioxide and water

20.

Tiny openings on the surface of the leaf (or stem) that control the passing of water vapor and other gases into and out of the plant are known as what?

a)

epidermis

b)

cuticle

c)

stomata

d)

guard cell

21.

A variation occurs through:

a)

adaptation

b)

mutation

c)

the environment

22.

An adaptation is an inherited trait that helps a species survive.

a)

true

b)

false

23.

List all the adaptations that this cactus has:

4 lines
24.

What is the collective term for the male part of the flower?

a)

Carpel

b)

Sepal

c)

Petal

d)

Stamen

25.

What part of the flower becomes the seed?

a)

Ovary

b)

Ovule

c)

Embryo

d)

Cotyledon

26.

What is the name of number 3?

a)

Filament

b)

Stigma

c)

Anther

d)

Pistil

27.

Which of these is the correct equation for photosynthesis? (select the best choice even if sunlight is not present in any of the choices)

a)

6O2 + C6H12O6 --> 6CO2 + 6H2O

b)

6O2 + 6CO2 --> C6H12O6 + 6H2O

c)

6CO2 + 12H2O --> C6H12O6 + 6H2O + 6O2

d)

6CO2 + 6H2O --> 6O2 + C6H12O6

28.

Reorder the Reproduction Cycle in its correct order.

a)

Pollination

(pollinators visit, and pollen attaches to them)

b)

Fertilization

(pollen transferred to stigma and travels through style to the ovule)

c)

Seed Dispersal

(wind/water/other organisms spread the seeds)

1)
2)
3)
29.

A mode of reproduction where cells from one only one parent are used and no reproductive organs are involved.

a)

Asexual reproduction

b)

Sexual reproduction

30.

A female reproductive organ that produces eggs.

a)

Stigma

b)

Ovary

c)

Style

d)

Pistil

31.

The process by which organisms produce more of their own kind.

a)

Reproduction

b)

Pollination

c)

Germination

d)

Behaviors

32.
Which statement below is correct about asexual reproduction and sexual reproduction?
a)

Asexual reproduction and sexual reproduction both involve one parent

b)

Sexual reproduction involves making clones and asexual reproduction creates diverse/different offspring

c)

Asexual reproduction creates clones and sexual reproduction creates diverse/different offspring

33.

How many parents are involved with sexual reproduction?

a)

none

b)

1

c)

2

d)

4

34.

The male gamete in sexual reproduction is called the ______. The female gamete is called the _____.

a)

egg, sperm

b)

sperm, egg

c)

stamen, stigma

d)

egg, yolk

35.

The trait that will always be expressed if at least one copy of an allele is present.

a)

Recessive

b)

Dominant

c)

DNA

36.

The trait that will be expressed only if two copies of the allele are present.

a)

Recessive

b)

Dominant

c)

DNA

37.

Which of the following is heterozygous?

a)

FF

b)

Gg

c)

tt

d)

RR

38.

Brown eye color is dominant. Blue eye color is recessive. Select the combination of letters below that would represent a person being a purebred for brown eyes. In other words, which option represents a person having both alleles for brown eyes? (hint: think of capitalization of letters and what is used for dominant vs. recessive).

a)

AA

b)

Aa

c)

aa

d)

aA

39.

Why does Scar have a scar but his brother Mufasa does not?

a)

Mufasa did not inherit it

b)

The scar gene skipped a generation

c)

The scar is an environmental trait

d)

Mufasa is not his brother

40.

From smallest to largest how would genetic information be organized?

a)

genes, cell, nucleus, chromosome, DNA

b)

chromosome, cell, gene, DNA, nucleus

c)

DNA/nucleotides, gene, chromosome, nucleus, cell

d)

nucleus, cell, gene, DNA, chromosome

41.

If brown eyes are dominant and blue eyes are recessive, what color eyes do the parents in this Punnett Square have?

a)

one has brown eyes and the other has blue eyes

b)

they both have blue eyes

c)

they both have brown eyes

d)

there's no way to tell based on this information

42.
A pure substance that cannot be separated into simpler substances by chemical or physical means.  
a)
Element
b)
Compound
c)
Mixture
d)
Chemical
43.
Carbon Dioxide is a ______ 
a)
compound 
b)
element 
c)
mixtures 
d)
Battle of Bunker Hill 
44.
This picture represents which of the following?
a)
element
b)
compound
c)
mixture of elements
d)
mixture of compounds
45.
What is Fe?
a)
Boron
b)
Fluorine
c)
Francium
d)
Iron
46.

What is a chemical bond?

a)

When two atoms hold hands

b)

Two atoms that are besties

c)

A force that holds two atoms together

d)

When two atoms love each other very much

47.

In an endothermic reaction, energy is _________.

a)

absorbed

b)

released

48.

When barium hydroxide and ammonium chloride react, the temperature of the mixture decreases. What kind of reaction is this?

a)

Endothermic

b)

Decomposition

c)

Exothermic

d)

Indothermic

49.

What term is given to a reaction which transfers heat energy to the surroundings?

a)

Endothermic

b)

Reversible

c)

Exothermic

d)

Exotermic

50.

if more heat energy is released in making bonds in the products than is taken in when breaking bonds in the reactants

a)

Exothermic

b)

Endothermic

c)

Exotermic

d)

Endotermic

51.

Why does a higher temperature increase the rate of a reaction?

a)

it increases both the frequency and energy of particle collisions

b)

it only increases the frequency of particle collisions

c)

it only increases the energy of particle collisions

d)

it reduces the activation energy of the reaction

52.

Grinding a effervescent tablet into powder increases the rate of reaction due to increased

a)

concentration

b)

surface area

c)

temperature

d)

reactants

53.

Adding a catalyst ___________ the activation energy.

a)

Raises

b)

Lowers

c)

Doesn't affect

d)

Inreases

54.

Which graph shows the effect of increasing temperature on the rate of reaction of calcium carbonate with dilute hydrochloric acid?

a)
b)
c)
d)
55.

How could we make this reaction happen more quickly?

a)

Decrease the concentration of the acid

b)

crush the chalk to increase the surface area

c)

Put the test tube in an ice bath

56.
What is the rate of reaction?
a)
How fast a reaction is 
b)
How big a reaction is
c)
How loud a reaction is
d)
How much gas a reaction produces
57.

The vertical (up and down) columns in the Periodic Table are called

a)

groups

b)

towers

c)

periods

d)

atomic numbers

58.
What does the 6 represent?
a)
atomic mass
b)
atomic number
c)
element name
d)
chemical symbol 
59.

Rows on the periodic table are called ___________.

a)

Periods

b)

Sentences

c)

Fences

60.

Elements in the same group or family have _____________.

a)

the same number of valence electrons and different properties.

b)

the same number of valence electrons and similar properties

c)

different number of valence electrons and similar properties.

d)

different number of valence electrons and different properties.

61.

Which class of elements are malleable, ductile, shiny when clean and polished, good conductors of heat and electricity, and reacts with acids to form hydrogen gas?

a)

metals

b)

nonmetals

c)

metalloids

d)

ions

62.

What is the name of the elements that are unreactive and have a full octet?

a)

Halogens

b)

Noble Gases

c)

Alkali Metals

d)

Transition Metals

63.

What is an atom or bonded group of atoms that has a positive or negative charge?

a)

ion

b)

atom

c)

metal

d)

nonmetal

64.

How many electrons are in Potassium

a)

19

b)

39

c)

20

d)

58

65.
An atom becomes _______ when it loses electrons.
a)
Positive
b)
Negative
c)
Neutral
d)
Invinsible
66.

Which particles change the charge in atoms when ions are formed?

a)

Protons

b)

Electrons

c)

Neutrons

67.
What is the correct layers of the earth starting with the surface?
a)
crust, outer core, inner core, mantle
b)
mantle, outer core, inner core ,crust
c)
crust, mantle, outer core, inner core
d)
outer core, inner core , crust, mantle
68.
The layer of rock that forms Earth's outer skin.
a)
crust
b)
mantle
c)
core
69.
The change from a gas to a liquid by cooling
a)
condensation
b)
evaporation
c)
sublimation
d)
deposition
70.
During the process of sublimation...
a)
a solid turns directly into a gas
b)
a liquid turns to a gas
c)
a solid turns into a liquid
d)
a gas turns directly into a solid
71.

As particles are heated they will

a)

contract

b)

expand

72.

Which properties do solids have?

a)

definite shape and volume

b)

no definite shape and a definite volume

c)

no definite shape and no definite volume

73.

What happens to particles during changes of state between solid and liquid.

a)

Particles move so fast they break from their fixed position.

b)

Particles melt and become a liquid.

c)

Particles find a circular orbit around an atom's nucleus.

d)

Particles stop vibrating and change into their liquid form.

74.
Tony is riding in a roller coaster car. After the car reaches the highest point on the track, it begins moving downward. What happens to the potential energy of the car as it moves?
a)
It is destroyed and lost.
b)
It remains at a constant level.
c)
It is converted to kinetic energy.
d)
It increases as height decreases.
75.

Identify the energy transfer

a)

electrical to chemical to light

b)

kinetic to potential

c)

chemical to electrical to light

d)

light to sound

76.

Identify the energy transfer

a)

chemical to kinetic

b)

solar to electrical

c)

thermal to light

d)

electrical to light

77.
The flow of electricity in a circuit-
a)
current
b)
flow
c)
circuit
78.

What names are given to the three subatomic particles found in most atoms?

a)

electron, proton, neutron

b)

electron, positron, neutron

c)

positron, proton, neutron

d)

electron, proton, neutral

79.

What is the unit of charge?

a)

Ampere

b)

Volt

c)

Second

d)

Coulomb

80.

What is this symbol?

a)

Cell

b)

Switch

c)

Bulb

d)

2 cell battery

81.

What is this symbol?

a)

Switch

b)

Fuse

c)

Buzzer

d)

Cell

82.
The picture shows an electrical circuit.  This circuit is a series circuit because: 
a)
it has 3 light bulbs.
b)
the same current flows through all three light bulbs.
c)
it uses a single battery.
d)
the electrical current has more than one path to flow through
83.

What is a renewable energy source.

a)

Coal

b)

Solar Power

c)

Nuclear Power

d)

Natural Gas

84.
Which of the following is a fossil fuel?
a)
Wind
b)
Coal
c)
Solar
d)
Biomass
85.

Which statement is true about coal and natural gas?

a)

Both are renewable resources

b)

Both require wind in order to work

c)

Both lead to greenhouse gases and climate change

d)

Neither one causes global warming

86.

What is the unit of measurement for resistance?

a)

Voltage

b)

Ampere

c)

Watts

d)

Ohms

87.
What is Resistance?
a)
the degree to which a circuit component opposes the passage of an electric current, causing energy dissipation
b)
How hard the energy is pushed
c)
The amount of charges that pass by a given point per second
d)
None of the above
88.
How does resistance affect current?
a)
less resistance - less current
b)
more resistance - less current
c)
more resistance - more current
d)
resistance does not affect current
89.
Which season is taking place in the Southern Hemisphere in Position 1?
a)
Winter
b)
Spring
c)
Summer
d)
Fall
90.
What are the reasons for the season?
a)
Earth's tilt & rotation
b)
Earth's tilt & revolution
c)
Earth's rotation & rovolution
d)
Earth's tilt & resolution
91.

Which answer correctly orders the planets from the sun?

a)

Mercury, Earth, Mars, Jupiter, Venus, Saturn, Uranus, Neptune

b)

Jupiter, Saturn, Uranus, Neptune, Earth, Venus, Mars, Mercury

c)

Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune

d)

Mercury, Venus, Earth, Mars, Saturn, Jupiter, Uranus, Neptune

92.

Which planet is the largest planet?

a)

Mercury

b)

Neptune

c)

Saturn

d)

Jupiter

93.

When will the forces of gravity between two objects be the GREATEST?

a)

when the masses of both objects are small and the objects are far apart

b)

when the masses of both objects are large and the objects are close together

c)

when the masses of both objects are small and the objects are close together

d)

when the masses of both objects are large and the objects are far apart

94.

Which statement about gravity is true?

a)

gravity causes objects to pull towards one another

b)

gravity causes objects to push away from each other

c)

gravity only takes place between planets

d)

the moon doesn't have any gravity

95.
On a graph, which axis shows the independent variable?
a)
x-axis
b)
y-axis
c)
neither
d)
it changes
96.
On a graph, which axis shows the dependent variable?
a)
x-axis
b)
y-axis
c)
neither
d)
it changes
97.
What is the independent variable?
Chocolate may cause pimples
a)
chocolate
b)
pimples
c)
food
d)
may cause
98.

Students of different ages were given the same puzzle to put together. They were timed to see how long it took to finish the puzzle. What is the DV?

a)

Student ages

b)

The puzzle

c)

Time to finish the puzzle

d)

None of the above

99.

What is this graph missing? Check all that apply.

a)

A title

b)

Data points

c)

X axis label

d)

Y axis label

e)

Units

100.
Walker is testing which fertilizer will grow the tallest grass.  The height of the grown grass is the __ variable.
a)
constant (same)
b)
independent (changes)
c)
dependent (measured)

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