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G8 Science Review

Total questions: 100

Worksheet time: 4hrs 55mins

Name
Class
Date
1.
About how long does it take the moon to make one complete cycle around the earth?
a)
65 days
b)
8 days
c)
365 days
d)
28 days
2.
What Moon phase is this?
a)
Last Quarter
b)
New Moon
c)
Third Quarter
d)
First Quarter
3.
What Moon phase is this?
a)
Waning Crescent
b)
Waxing Crescent
c)
Waxing Gibbous
d)
Waning Gibbous
4.
What phase comes BEFORE this one?
a)
Waxing Gibbous
b)
Waxing Crescent
c)
Waning Gibbous
d)
Waning Crescent
5.
Which lunar phase is visible when the moon is in this position?
a)
New moon
b)
Full moon
6.
Which body has the greater effect on Earth's tides?
a)
Sun
b)
Saturn
c)
Moon 
d)
Venus
7.

This model is showing us a...

a)

lunar eclipse

b)

solar eclipse

c)

phases of the moon

d)

earth eclipse

8.

True or False: Plants make their own food via Cellular Respiration and use the energy from the food that is made via Photosynthesis.

a)

True

b)

False

9.

What gas do plants give off after conducting photosynthesis?

a)

Oxygen

b)

Carbon

c)

Nitrogen

d)

Hydrogen

10.
Which conclusion best matches the trends shown on the graph?
a)
Bean plants produce more ATP than corn plants.
b)
Corn plants require more oxygen than bean plants.
c)
Corn plants release more carbon dioxide than bean plants.
d)
Corn plants produce sugars at a faster rate than bean plants.
11.
This is referred to as the energy currency of the cell
a)
ADP
b)
ATP
c)
Mitochondria
d)
Nucleus
12.

What are the reactants (taken into) of cellular respiration? (Mark all of them!)

a)

oxygen

b)

glucose

c)

carbon dioxide

d)

water

e)

energy

13.
What is the purpose of cellular respiration?
a)

to make food for a plant

b)

to break down materials

c)

to make energy

14.
A piece of copper has a mass of 89g and a volume of 10 cm3.  What would be the density of the copper?
a)
0.89 g/cm3
b)
89 g/cm3
c)
8.9 g/cm3
d)
890 g/cm3
15.
An irregularly shaped piece of gold was lowered into a graduated cylinder holding a volume of water equal to 17 ml. The height of the water rose to 20 ml. If the mass of the gold was 27 g, what was its density?
a)
9 g/mL
b)
10.5 g/mL
c)
6.5 g/mL
d)
8 g/mL
16.

Based off of this table, which statement is true?

a)

Aspirin is more soluble than Sugar

b)

Sugar is less soluble than Salt

c)

Carbon Dioxide is less soluble than Salt

d)

Sugar is the most soluble substance on the planet

17.

Based on this table, what can be concluded?

a)

KNO3 is more soluble at higher temperatures than lower temperatures

b)

KNO3 is most soluble at lower temperatures

c)

KNO3 is insoluble at low temperatures

d)

KNO3 is less soluble at higher temperatures than lower temperatures

18.

Use the Data Table to answer the question:

If the following liquids were stacked together in a jar, where in the jar would a substance with a mass of 14g and a volume of 20mL float?

a)

In the middle

b)

Near the top

c)

At the bottom

d)

On top of everything else

19.
What line segment represents only the solid state?
a)
A-B
b)
B-C
c)
C-D
d)
D-E
20.
These are found on the Periodic Table.
a)
Compounds
b)
Elements
c)
Mixtures
21.
Each column in the periodic table is called a 
a)
period
b)
group
c)
cluster
d)
unit
22.
How many protons are in this element?
a)
79
b)
196
c)
117
d)
Cannot be determined
23.
What does the 1.00794 stand for?
a)
Hydrogen
b)
atomic number
c)
atomic mass
d)
atomic explosion
24.

Does 1cup or 6cups of water have a higher density?

a)

1 cup

b)

6 cups

c)

They have the same density

25.

Weight is the amount of matter in an object.

a)

True

b)

False

26.

The parts of a compound can often be separated by physical properties.

a)

True

b)

False

27.
What is a solvent
a)
the liquid in which a solute is dissolved to form a solution.
b)
Another word for solution
c)
A thing that make drinks turn colors
d)
Its a metal molecole
28.

Which substance is least soluble at 0 ºC?

a)

KI

b)

KNO3

c)

KClO3

d)

Ce2(SO4)3

29.

How many grams are soluble in 100 g of water at 100 ºC?

a)

300 grams

b)

250 grams

c)

100 grams

d)

50 grams

30.

Select all that apply: What will allow more solute to be dissolved in a solvent.

a)
adding more solute
b)
stiring
c)
cooling solution
d)
heat
31.
Which of these is a pure substance?
a)
bread
b)
table salt
c)
garden soil
d)
sea water
32.
A mixture that appears to be evenly mixed throughout:
a)
an atom
b)
a compound
c)
a homogeneous mixture
d)
a heterogeneous mixture
33.
If an unknown substance CANNOT be broken down into simpler substances, it is 
a)
a compound
b)
an element
c)
a homogeneous mixture
d)
a heterogeneous mixture
34.

Scientific __________ predict WHAT HAPPENS in the natural world

a)

Law

b)

Theory

35.

SELECT ALL THAT APPLY:

Which variable does your data and results come from?

a)

Dependent

b)

Control

c)

Independent

d)

Outcome

36.

Why is it important that scientists modify scientific theories when important new information is discovered?

a)

To confuse people

b)

To keep science interesting and fresh

c)

To ensure theories are as accurate and effective as possible

d)

To make sure non-scientists can't understand theories

37.

What is the independent variable on this graph?

a)

Estimated Population

b)

Population

c)

Year

38.
a)

The independent variable is Day. The dependent variable is Temperature

b)

The independent variable is Temperature. The dependent variable is Day

39.

 A biologist is investigating the effects of growth hormone on the rate of metamorphosis in butterflies. Which of the following methods of investigation would work best for the biologist investigating any possible effects?

a)

Models

b)

Controlled experiments

c)

Systematic observations

d)

Random sampling of populations

40.

Ahmya wants to know if fish swim faster to Broadway music or the Blues. She has two fish tanks, with the same kind and number of fish in each. She plays Broadway music for one hour each day for one tank and the Blues for one hour each day for the other. She puts her findings in a scientific journal.

Name two control variables in this experiment.

a)

Length of music exposure

b)

Music type

c)

Type of fish

d)

How fast the fish swim

41.

Why is it important that scientists modify scientific theories when important new information is discovered?

a)

To confuse people

b)

To keep science interesting and fresh

c)

To ensure theories are as accurate and effective as possible

d)

To make sure non-scientists can't understand theories

42.

Newton’s third law of motion states that for every action there is an equal and opposite reaction. How does this law differ from a theory?

a)

A theory explains a set of well tested observations; a law describes a pattern in nature.

b)

A law explains a pattern in nature in more detail than a theory. 

Theories are based on more evidence than laws.

c)

Laws can be changed with the addition of new evidence but theories cannot.

d)

Theories are based on more evidence than laws.

43.

Carlos conducted an experiment involving temperature and reaction rate. When the experiment was complete, he used his data to create this graph, fitting a line to his data points.

Based on these results, which statement about Carlos's experiment is most accurate?

a)

As temperature increases, reaction rate remains steady

b)

As reaction rate increases, temperature decreases

c)

As temperature increases, reaction rate increases

d)

As reaction rate decreases, temperature increases

44.

Which is the stronger acid?

a)

pH 1

b)

pH 4

c)

pH 8

d)

pH 13

45.

If the substance is neutral, what would the pH be?

a)

3

b)

5

c)

7

d)

9

e)

11

46.

If an acid is combined with a base of equal strength, the result will most likely be

a)

a neutral solution.

b)

a stronger acid.

c)

impossible to tell without testing the pH.

d)

a stronger base

47.

Bases are usually identified by their sweet taste and

are known to turn blue litmus into red.

a)

TRUE

b)

FALSE

c)

MAYBE

48.

Neutralization occurs when an acid reacts with an equivalent amount of base and forms a neutral solution containing salt and water.

a)

TRUE

b)

FALSE

c)

MAYBE

49.

Turns red litmus paper blue

a)

Acid

b)

Base

c)

Neutral

50.

Pure Air

a)

HOMOGENEOUS

b)

HETEROGENEOUS

51.

Chocolate Chip Ice Cream

a)

HOMOGENEOUS

b)

HETEROGENEOUS

52.

Salad Dressing

a)

HOMOGENEOUS

b)

HETEROGENEOUS

53.

What kind of mixture is shown in the picture?

a)

Homogeneous

b)

Heterogeneous

54.

What kind of mixture is shown in the picture?

a)

Homogeneous

b)

Heterogeneous

55.
If reaction starts with 20g of reactants it should produce 
a)
a total of 40g of products
b)
a total of 10g of products
c)
a total of 80 g of products
d)
a total of 20g of products
56.
Matter can not be created nor destroyed: it can only be
a)
Destroyed a little bit
b)
Invisible
c)
Transformed, changed
d)
None of the above
57.

Which of the models of a chemical reaction best represents the Law of Conservation of Mass?

a)

A

b)

B

c)

C

d)

D

58.

Which of the models of a chemical reaction best represents the Law of Conservation of Mass?

a)

A

b)

B

c)

C

d)

D

59.

A student pours 5.49 g hydrochloric acid (HCl) into an open beaker that contains a piece of magnesium (Mg). The Total mass of the product is 5.73 g. What was the mass of the magnesium?

a)

5.71 g

b)

11.22 g

c)

0.24 g

60.
A celestial cloud of dust and gas is called . . .
a)
nebula
b)
supernova
c)
accretion disc
d)
bombardment
61.
A massive explosion of a star is called . . .
a)
supernova
b)
nebula
c)
pulsar
d)
black hole
62.

MOST OF THE OUTER PLANETS ARE MADE OF

a)

ROCKY CORES

b)

HELIUM AND HYDROGEN ONLY

c)

GAS

d)

ICE

63.

The main force at play during making of our solar system

a)

strong force

b)

weak force

c)

gravity

d)

electrostatic force

64.
Earth and the other planets closest to the Sun are made mostly of _______
a)
gas
b)
metal
c)
water
d)
rock
65.
Which is the largest object in our solar system?
a)
Sun
b)
Jupiter
c)
Earth
d)
Pluto
66.
As the distance between 2 objects increases, what happens to gravitational force?
a)
increases
b)
decreases
c)
stays the same
d)
i don't know
67.
Which of the following will not change in different gravitational fields?
a)
wieght
b)
force
c)
mass
d)
pounds
68.
What would happen to your weight if Earth's mass was cut in half?
a)
increase because gravitational force increases
b)
decrease because gravitational force decreases
c)
decrease because gravitational force increases
d)
increase because gravitational force decreases
69.
A measure of gravitational force on an object.
a)
gravity
b)
weight
c)
mass
d)
kilograms
70.

T/F: the sun is the biggest star in our galaxy

a)

True, that is why we have the only solar system

b)

False, there are much bigger stars than our sun

71.
A ball of ice and dust with a tail of gas and dust pointing away from the sun.
a)
Asteroid
b)
Comet
c)
Moon
d)
Meteor
72.

Which planet is NOT one of the

"Gas Giants"?

a)

Uranus

b)

Venus

c)

Neptune

d)

Saturn

73.
One full orbit of an object around another object is called a ________.
a)
axis
b)
rotation
c)
revolution
d)
satellite
74.

This table shows the rotation period and revolution period for 6 planets, and Earth’s moon, all relative to Earth’s periods. Which 2 planets have shorter days than Earth?

a)

Jupiter and Saturn

b)

Venus and Mercury

c)

Mars and Jupiter

d)

Saturn and Moon

75.
Select the order from smallest to largest.
a)
Sun, Milky Way, solar system, universe
b)
Sun, Milky Way, universe, solar system
c)
Sun, solar system, Milky Way, universe
d)
Sun, solar system, universe, Milky Way
76.

a small rocky body orbiting the sun, ranging from the size of a small house to dust particles

a)

nebula

b)

terrestrial planets

c)

collision

d)

asteroids

77.

What does the Geocentric system look like?

a)
b)
c)
d)
78.

What does the Heliocentric system look like?

a)
b)
c)
d)
79.

What factors affect gravitational force?

a)

mass, distance

b)

speed, distance

c)

momentum, mass

80.

What is Astronomical Unit?

a)

The average distance between the Sun and the Moon

b)

The average distance between Neptune and the Sun

c)

The average distance between Earth and the Sun

d)

The average distance between Earth and Moon

81.

What is Light Year?

a)

The distance travelled by light in a second

b)

The distance travelled by light in a minute

c)

The distance travelled by light in a year

d)

The distance travelled by light in a decade

82.

Which distance is larger: 1 astronomical unit or 1 light-year?

a)

1 AU

b)

1 LY

83.

If an object is 7.4 light years away from Earth, what does this tell you?

a)

It would take 7.4 minutes for the light to get to Earth.

b)

Traveling at the speed of light it takes 7.4 yrs to get to the earth.

c)

The object is very close to Earth.

d)

It would take 7.4 seconds for the light to get to earth.

84.
Put the stars in order from coolest to hottest.
a)
Blue, White, Yellow, Orange, Red
b)
Red, Orange, Yellow, White, Blue
c)
Red, Orange, Yellow, Blue, White
d)
Red, Yellow, Orange, White, Blue
85.
Which property of a star is the brightness of a star at a standard distance?
a)
Apparent (magnitude) brightness
b)
Absolute (magnitude) brightness
c)
Luminosity
d)
Size of the star
86.
A very bright star can seem to be dimmer because it is 
a)
further away
b)
cooler in temperature
c)
very close
d)
batteries are dying
87.

As the _________ of a star increases, luminosity increases.

a)

size

b)

distance

c)

age

d)

composition

88.

The table compiles information about the distance of various stars from Earth, their apparent magnitude, and their absolute magnitude. Based on evidence in the table, which of the stars would look the brightest when observed from Earth?

a)

Sirius

b)

Rigel

c)

Arcturus

d)

Aldebaran

89.

Two stars have the same apparent magnitude as seen from Earth’s surface. Star A is 33 ly away. Star B is 346 ly away. Which of the following claims is supported by the evidence?

a)

Star B is larger than Star A

b)

Star B is more luminous than Star A

c)

The stars have the same absolute magnitude

d)

Star A has a smaller absolute magnitude

90.
What category on the H-R diagram has the majority or the most stars?
a)
Super giants
b)
White Dwarfs
c)
Giants
d)
Main Sequence
91.
Star R and S both have the same luminosity of 100, if Star S is 10 ly farther from Earth which star has the highest apparent magnitude?
a)
Star R
b)
Star S
c)
Both Star S and R
92.
Where on the H-R diagram would you find the dimmest stars?
a)
At the top
b)
Giants
c)
At the bottom
d)
Main Sequence
93.
The figure above shows parts of a wave.
 Which letter represents wavelength? 
a)
S
b)
T
c)
W
d)
X
94.
The above diagram represents parts of a wave. Which letter represents the trough of the wave?
a)
W
b)
X
c)
T
d)
S
95.

Compared to a white dwarf, a red supergiant is...

a)

Hotter and brighter

b)

Hotter and not as bright

c)

Colder and brighter

d)

Colder and not as bright

96.

What kind of star has the longest lifespan?

a)

A very massive star, like a blue giant

b)

An average sized star, like our Sun

c)

A star with low mass, like a red dwarf

97.

Check all the following statements that are TRUE

a)

Asteroids are made of rock and metal

b)

Comets are made of ice, rock, and dust

c)

Comets can be found in the Oort Cloud

d)

All the above

98.

A young star that has just started the fusion of hydrogen is called a ____________________.

a)

Black Dwarf

b)

Red Giant

c)

Protostar

d)

Nebula

99.

Our sun is known as a middle-aged, stable star. Also known as a ____________________.

a)

Gas Giant

b)

Nebula

c)

Pulsar

d)

Main Sequence Star

100.

Which mass of star will have the shortest life span?

a)

Low Mass Star

b)

Medium Mass Star

c)

High Mass Star

d)

Very High Mass Star

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