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Physical Science Semester 2 Exam

Total questions: 75

Worksheet time: 2hrs 9mins

Name
Class
Date
1.

What is weather?

a)

Can change within a few minutes or hours!

b)

Takes a very long time to change!

2.

What is climate?

a)

Can change within a few minutes or hours!

b)

Takes a very long time to change!

3.
Increased carbon dioxide may cause global warming by trapping more ____________ in the atmosphere.
a)
water
b)
gases
c)
heat
d)
water vapor
4.
The gradual increase in the temperature of the atmosphere is known as ___________________.
a)
sunspots
b)
global warming
c)
ice ages
d)
arid
5.
The impact on the planet due to global warming is called...
a)
climate change
b)
the seasons
c)
the weather
d)
natural change
6.
Which human activity contributes the MOST carbon dioxide to the atmosphere?
a)
Fishing
b)
Breathing
c)
Burning Fossil Fuels
d)
Farming
7.

What is the purpose of assessing the ecological (carbon) footprint?

a)

To determine economic growth from carbon-based economies

b)

To measure human impact on the environment

c)

To calculate water usage from daily use

d)

To analyze political systems and their role in regulating environmental outcomes

8.

_____ is the number of members of one species within an ecosystem or habitat.

a)

Biodiversity

b)

Community

c)

Population

d)

Niche

9.

Which statement best summarizes the effect of technology on human population growth?

a)

Technology can be used to reduce the impact of population growth on the planet.

b)

Technology is the sole cause of the growth in the human population.

c)

Technology neither caused nor can cure the negative effects of a large population.

d)

Technology is the sole cause of the reduction in the rate of human population growth.

10.
These gases, such as carbon dioxide, trap heat in the Earth's atmosphere causing global warming
a)
Global warming gases
b)
Hot House gases
c)
Green House gases
d)
Thermal pollution
11.

What cycle are fossil fuels part of ?

a)

carbon

b)

oxygen

c)

nitrogen

d)

phosphorus

12.

According to the diagram, geologic activity, such as volcanoes,

a)

Increases the levels of CO2 in the atmosphere.

b)

Decreases the levels of CO2 in the atmosphere.

13.
What type of resource can be easily replaced or replenished by nature?
a)
renewable 
b)
nonrenewable
c)
monoculture
d)
deforestation
14.
What is the growing of one single crop all the time called?
a)
agriculture
b)
monoculture
c)
hydrofracking
d)
geothermal
15.

What is sustainable agriculture?

a)

Sustainable agriculture disregards the economic viability of farmers and only focuses on environmental conservation.

b)

Sustainable agriculture is a method of farming that focuses on long-term productivity without harming the environment, conserving natural resources, and supporting the economic viability of farmers.

c)

Sustainable agriculture involves using excessive amounts of pesticides and chemicals to boost crop yields.

d)

Sustainable agriculture is a method of farming that focuses on short-term gains at the expense of the environment.

16.

Food deserts exist because...

a)

fast-foods are advertised better than fresh foods.

b)

fresh food does not grow well in certain areas of the country.

c)

people live too far away from grocery stores and can't afford to purchase fresh foods.

d)

there are too many grocery stores in urban communities.

17.

What happens when countries produce less food and depend more on imported food?

a)

Farmers lose their land

b)

Farmers earn more money

c)

Farmers become food secure

d)

Farmers become food insecure

18.

What is the most extreme form of food insecurity?

a)

Floods

b)

Drought

c)

Famine

d)

Conflict

19.
Negative Feedback Loops:
a)
amplify processes
b)
prevent small changes from getting larger
c)
are initiated during childbirth
d)
are found only in plants
20.

In a positive feedback loop, each action creates a consequence that _____________________ the other action.

a)

decreases

b)

has no effect on

c)

amplifies

21.
These countries typically have simple, agriculture-based economies
a)
Developed countries
b)
Developing countries
22.

Countries with high levels of literacy and higher education are in which level of economic development?

a)

More Developed

b)

Newly Industrialized

c)

Less Developed

23.

Countries with strong infrastructure [transportation/ communication/ healthcare/ education systems] would be which level of economic development?

a)

More Developed

b)

Newly Industrialized

c)

Less Developed

24.

Is this country Developed or Developing?

a)

Developed

b)

Developing

25.

Describe the healthcare of this country.

a)

Good healthcare available to most

b)

Good healthcare available to some

c)

Poor healthcare for all

d)

Poor healthcare for most

26.

What is the biggest difference between the Geocentric Model and the Heliocentric Model?

a)

the shape of the planets' orbits

b)

the movement of the moon

c)

the object at the center of the universe

d)

the brightness of the sun

27.

What is the name of this model?

a)

Heliocentric Model

b)

Geocentric Model

c)

Circle Model

d)

Aristotle Model

28.
Theory which explains that the universe began as a point and has been expanding ever since.
a)
Geocentric Model
b)
Heliocentric Model
c)
Big Bang Theory
d)
Cosmology
29.
The universe is expanding!  This means that:
a)
all of the galaxies are spreading out.
b)
the universe must have started from a single point.
c)
the universe is cooling down.
d)
all of the above.
30.
The universe is ____________ years old.
a)
8.13 billion
b)
13.8 billion
c)
1.83 billion
d)
381 million
31.

Which of the following statements best describes the characteristics of the terrestrial planets?

a)

small, dense, rocky surfaces

b)

large, planetary rings; many moons

c)

rocky cores; close to sun; surface craters

d)

made up of hydrogen and helium; small; close to sun

32.

What is the order of the distances of the terrestrial planets from the Sun, from farthest to closest?

a)

Mars, Venus, Earth, Mercury

b)

Mars, Earth, Venus, Mercury

c)

Mercury, Venus, Earth, Mars

d)

Venus, Earth, Mars, Mercury

33.

WHAT IS THE CORRECT ORDER FROM THE SUN FOR THE LAST FOUR PLANETS?

a)

NEPTUNE, URANUS, SATURN, JUPITER

b)

URANUS, SATURN, JUPITER, NEPTUNE

c)

JUPITER, URANUS, NEPTUNE, MARS

d)

JUPITER, SATURN, URANUS, NEPTUNE

34.

In what category do we put the planets that are made of gas and ice?

a)

Jovian

b)

Terrestrial

c)

Milkyway

d)

Inner

35.

Weight is _________.

a)

the quantity of matter in an object.

b)

the measure of an object's inertia.

c)

the force exerted by gravity on an object's mass.

d)

equal to the mass of an object.

36.
The amount of matter in an object is 
a)
pressure
b)
weight
c)
mass
d)
force
37.
Which model has greater gravitational attraction (if any)
a)
Model A
b)
Model B
c)
Both Model A and Model B (same gravity)
38.

A(n) _____ is the curved path of an object around a point/object in space.

a)

orbit

b)

rotation

c)

revolution

d)

phase

39.

What prevents planets from drifting off into space and keeps it in the planets in our Solar System?

a)

Gravity

b)

Weight

c)

Friction

d)

Forward Motion

40.
A person would weigh more on Jupiter than on the Earth because---
a)
Jupiter has less mass, and therefore less gravity
b)
Jupiter has more mass, and therefore less gravity.
c)
Jupiter has less mass, and therefore more gravity.
d)
Jupiter has more mass, and therefore more gravity
41.
Planets orbit the Sun in a shape called a(n)
a)
circle
b)
ellipse
c)
focus
d)
perihelion
42.
A planet moves __________ when it is farthest from the sun.
a)
faster
b)
slower
43.
The farther away a planet is from the sun, the _______ it takes it to orbit the sun once. 
a)
longer
b)
shorter
44.

All stars begin their life as a

a)

Main Sequence

b)

Nebula

c)

Protostar

d)

Black Dwarf

45.

When nebula is big and hot enough is collapses on itself and ...................... is made

a)

white dwarf

b)

supernova

c)

protostar

d)

planetary nebula

46.
In this stage, a star spends most of its life. Hydrogen is fused into helium at a temperature of millions of degrees.
a)
nebula
b)
protostar
c)
main-sequence
d)
supergiant
47.

The stage after the main sequence star:

a)

red giant

b)

nebula

c)

white dwarf

d)

black dwarf

48.
A gigantic explosion that causes the death of a large star is called
a)
pulsar
b)
red giant 
c)
supernova
d)
black hole
49.
The core of a Red Giant collapses and becomes a ___________________.
a)
White Dwarf
b)
Blue Supergiant
c)
Red Supergiant
d)
Black Hole
50.
This stage is made by densely packed neutrons and sometimes spins and blinks and is called a pulsar
a)
Supernova
b)
White dwarf
c)
Black hole
d)
Neutron star
51.
When a star's gravitational pull is so strong that not even light can escape, it's called a what?
a)
Black hole
b)
Supernova
c)
White dwarf
d)
Nebula
52.
The path a star takes during its life cycle depends solely on its _____.
a)
temperature
b)
luminosity
c)
mass
d)
location
53.

ASTEROID is made of rock

a)

True

b)

False

54.

COMET frozen ball of dust

a)

True

b)

False

55.

METEOR is made of rock

a)

True

b)

False

56.
Which is an example of SPEED?
a)
5 SECONDS
b)
2 METERS PER SECOND
c)
4 METERS
d)
1 HOUR
57.
Which is an example of VELOCITY?
a)
A dog running at 3 m/s
b)
A deer sprinting at 4 m/s
c)
A migrating bird headed south for the winter at 3 m/s
d)
A person not moving at all
58.

Speed -

a)

A measure that gives rate of change and position

b)

A measure that dissolves to one unit

c)

A measure of distance an object travels per unit of time.

d)

A measure of distance an object travels per unit of measurement.

59.

What is velocity?

a)

Speed + Direction

b)

Speed Only

c)

Speed + Time

d)

Only Direction

60.

If my starting speed is 100mi/hr and my final speed is 0mi/hr I experienced a change in acceleration.

a)

True

b)

False

61.

What is Newtons 1st law

a)

Inertia

b)

F=m*a

c)

Mass and acceleration

d)

force

62.

The tendency of objects to resist a change in motion is called:

a)

Friction

b)

Inertia

c)

Gravity

d)

Velocity

63.

What are the appropriate units to describe acceleration?

a)

m/p

b)

m/h

c)

m/s

d)

m/s square

64.

Newton's third law states that any action will have a(n) _______ and ______ reaction

a)

equal and same

b)

equal and opposite

c)

equal and equal to

65.

What is the Formula for Force?

a)

Final velocity subtracted by initial velocity

b)

Mass times acceleration.

c)

Toes x mass = cute

d)

False

66.
The momentum of an object depends upon the object's ___________&_____________.  
a)
size and shape
b)
mass and speed
c)
mass and veloctiy
d)
mass and energy
67.

What is the unit for momentum?

a)

m/sec

b)

kg/sec

c)

kg/m

d)

kg x m/sec

68.

What is an elastic collision?

a)

An elastic collision is an encounter between two bodies in which the total kinetic energy of the two bodies is different.

b)

An elastic collision is an encounter between two bodies in which the total kinetic energy of the two bodies remains the same.

c)

An inelastic collision is an encounter between two bodies in which the total kinetic energy of the two bodies remains the same.

69.

What is an inelastic collision?

a)

When two objects collide, becoming stuck together and internal kinetic energy is lost (but not really lost, it transfers to different forms of energy)

b)

When two objects collide, becoming stuck together and internal kinetic energy is lost

c)

When two objects don't collide, becoming stuck together and internal kinetic energy is lost (but not really lost, it transfers to different forms of energy)

70.
Energy due to motion is ____________ energy. 
a)
Potential 
b)
Energy
c)
Kinetic
d)
Friction
71.
What type of energy is in this picture?
a)
Kinetic
b)
Potential
c)
Chemical
d)
Sound
72.
Gravitational potential energy depends on the ________ and ________ of the object. 
a)
Height and mass
b)
Friction and movement
c)
Mass and Movement
d)
Height and Friction 
73.
When a pendulum swings, at which point is kinetic energy highest?
a)
1
b)
2
c)
3
d)
4
74.
When a pendulum swings, at which point is potential energy at its greatest?
a)
1
b)
2
c)
3
d)
4
75.
According to the Law of Conservation of energy, the amount of energy before and after a reaction must be the same. Which statement below is true?
a)
The total amount of energy is conserved
b)
The total amount of energy is less after a reaction
c)
The total amount of energy is more after a reaction

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