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Semester 1 Review

Total questions: 70

Worksheet time: 1hrs 8mins

Name
Class
Date
1.
Which one is balanced?
a)
top
b)
bottom
c)
both
2.
If there are two forces going in the SAME direction, you would ...?
a)
(-) Subtract the forces
b)
(+) Add the forces
c)
Neither
d)
(x) Multiply
3.
Forces that have a force of Zero (0).
a)
Balanced force
b)
Unbalanced force
4.

If the net force is 0 the object will ...

a)

CHANGES motion

b)

STAY the SAME, NO change in motion

5.
What is the net force?
a)
17 N Right
b)
3 N Right
c)
3 N Left
d)
17 N Left
6.
Calculate the net force.
a)
600 N
b)
66.7 N
c)
.015 N
7.
A net force of 250 N is applied to an object that accelerates at a rate of 5 m/sec2.  What is the mass of the object?
a)
50 kg
b)
245 kg
c)
.02 kg
d)
25.5 kg
8.
What is speed?
a)
how far you go
b)
how much distance is covered over a period of time
c)
how fast you accelerate
d)
the change in the location of a object
9.
On a distance vs. time graph, the steeper the slope _____
a)
the slower the speed
b)
the faster the speed
c)
less acceleration
d)
greater acceleration
10.
Which is not an example of acceleration?
a)
Driving at a constant speed 
b)
A bat hitting a ball
c)
Throwing a football 
d)
Kicking a soccer ball
11.

A wheeled cart is moving to the right at a constant speed. Two forces of equal magnitude are acting upon the cart. Which of the following best describes the forces and motion of the cart?

a)

Balanced Forces, Constant Speed

b)

Balanced Forces, Acceleration

c)

Unbalanced Forces, Constant Speed

d)

Unbalanced Forces, Acceleration

12.

What will cause an object to accelerate?

a)

Applied forces

b)

Balanced forces

c)

Unbalanced forces

13.

Which of the following objects will experience an unbalanced force?

a)

A bike rider on a smooth and level road, pedaling at a constant rate.

b)

A train pulling on another train, each with the same amount of force.

c)

A chair sitting on the floor with balanced forces acting in opposite directions.

d)

A ball rolling across the floor with friction acting in the opposite direction.

14.
What does this graph represent?
a)
Constant Speed
b)
Acceleration
c)
Not moving
15.
What does this graph represent?
a)
Constant speed
b)
Acceleration
c)
Not moving
16.
What does this graph represent?
a)
Constant speed
b)
Acceleration
c)
Not moving
17.
Which graph shows the object standing still?
a)
A
b)
B
c)
C
d)
D
18.

What is this line of this graph showing?

a)

moving away from starting point at a constant speed

b)

moving back towards the starting point at a constant speed

c)

acceleration (getting faster)

d)

deceleration (getting slower)

19.

All matter is made of what

a)

energy

b)

atoms

c)

electrons

d)

compounds

20.

The central region of an atom where its neutrons and protons are is its

a)

nucleus

b)

electron cloud

c)

core

d)

center

21.

An atom with atomic number 6 would have how many protons

a)

6

b)

12

c)

3

d)

cannot be determined

22.

Particles in an atom that are neutral and have no charge are

a)

negatrons

b)

electrons

c)

neutrons

d)

protons

23.

True or False: Neutrons have a negative charge

a)

True

b)

False

24.

A particle that moves around the nucleus is a(n)...

a)

Proton

b)

Neutron

c)

Electron

d)

Quark

25.

In the modern periodic table, elements are arranged by:

a)

atomic mass

b)

atomic number

c)

valence electrons

d)

number of isotopes

26.

If an atom has 10 protons, 10 neutrons, and 10 electrons, what is the mass of the atom?

a)

10

b)

20

c)

30

27.

True/False: Compounds are made of two or more different elements.

a)

True

b)

False

28.

What particle uniquely identifies an element?

a)

Number of Valence Electrons

b)

Number of Protons

c)

Number of Electrons

d)

Atomic Mass

29.

Anything that has mass and takes up space is called

a)

heterogeneous

b)

homogeneous

c)

matter

d)

density

30.
What is the chemical symbol for the element hydrogen
a)
H
b)
He
c)
h
d)
he
31.
What is made up two or more elements that are chemically combined?
a)
Element
b)
Mixture
c)
Compound
d)
Solids
32.
How many elements are represented in the compound?
Na2CO3
a)
1
b)
2
c)
3
d)
4
33.
What is the chemical symbol for mercury?
a)
Hg
b)
Mc
c)
My
d)
C
34.

Which of the following is correct?

a)

reactants <-- products

b)

reactants + products

c)

reactants --> products

d)

reactants = products

35.

Which of the following is the BEST evidence that rusting is a chemical property rather than a physical property of iron?

a)

Rust forms slowly.

b)

Rust can form on any iron.

c)

Rust cannot turn back into iron.

d)

Rust does not look the same as iron.

36.

Which of the following equations follows the Law of Conservation of Mass?

a)

2Fe + 3O2 --> Fe2O3

b)

H2 + O2 --> 2OH

c)

2Mg + Cl --> MgCl2

d)

CH4 + 3O2 --> 2CO2 + 2H2O

37.

Which of these unbalanced equations shows rust, Fe2O3, forming when oxygen, O2, reacts with iron, Fe?

a)

Fe2O3 → O2 + Fe

b)

Fe→ O2 + Fe2O3

c)

Fe2O3 + Fe→O2

d)

O2 + Fe→Fe2O3

38.

The above diagram is a model of a molecule of methane. What is the formula for methane?

a)

CH8

b)

C8H4

c)

CH4

d)

C8H

39.

A student placed 2 grams of baking soda in a balloon and 100 mL of vinegar in an Erlenmeyer flask. After stretching the opening of the balloon across the neck of the flask, the student raised it to dump the baking soda into the flask. He immediately observed foaming bubbles in the flask and the balloon began to expand. The student concluded that —

a)

only a physical change was occurring

b)

the baking soda and vinegar were products of a chemical reaction

c)

the gas was oxygen

d)

the bubbles indicated a chemical change was occurring

40.

The formula for glucose is C6H12O6. How many elements does glucose contain?

a)

1

b)

3

c)

24

d)

432

41.

Hydrogen decomposes quickly when exposed to light. The reaction for decomposing hydrogen peroxide is:


2H2O2 → 2H2O + O2

45.55 g --> ? g + 21.44 g


What is the mass of H2O in the reaction above?

a)

66.99 g

b)

24.11 g

c)

21.44 g

d)

48.22 g

42.
What weather instrument is this and what does it measure?
a)
wind vane- wind direction
b)
thermometer-temperature
c)
rain gauge-rain fall
d)
anemometer-wind speed
43.

What is the mixture of gases surrounding our planet called?

a)

atmosphere

b)

trees

c)

planet

d)

equator

44.
What type of storm front is this? 
a)
warm front
b)
cold front
c)
stationary front
d)
occluded front
45.
What does symbol # 3 mean?
a)
stationary front
b)
occluded front
c)
warm front
d)
cold front
46.
A front is
a)
where warm air is cooling at earth's surface
b)
a line where hot and cold air are separating
c)
a line where two different air masses meet
d)
where cold air is rising and forming rain clouds
47.
Which most likely produces clear, cool weather?
a)
zero air pressure
b)
stable air pressure
c)
a low pressure system
d)
a high pressure system
48.
_____________ air is more dense and tends to sink
a)
cold
b)
warm
c)
moist
d)
dry
49.
Which type of front is pictured?
a)
Cold front
b)
Warm front
c)
Occluded front
d)
Stationary front
50.
What symbol is this?
a)
warm front
b)
cold front
c)
stationary front
d)
occluded front
51.
Which system results in rainy or stormy weather?
a)
high pressure
b)
low pressure
c)
hurricane
d)
weather system
52.
Which system results in drier, fairer weather?
a)
high pressure
b)
low pressure
c)
hurricane
d)
weather system
53.
When a cold front is approaching, what happens?
a)
warm air is pushing under cold air causing humid weather and lower temperatures
b)
warm air is pushing under cold air causing humid weather and higher temperatures
c)
warm air rises, cools, and causes rain and thunderstorms
d)
cold air is pushed over warm air causing rain and thunderstorms
54.
Which type of front is near Seattle?
a)
cold front
b)
warm front
c)
occluded front
d)
stationary front
55.
What direction is the cold front moving on the map? 
a)
Southwest
b)
Northwest
c)
Southeast
d)
Northeast
56.
Which front leads to steady rain for several days?
a)
warm front
b)
cold front
c)
stationary front
d)
occluded front
57.
A severe storm that involves strong winds and forms over warm water is:
a)
tornado
b)
thunderstorm
c)
hurricane
d)
blizzard
58.
Humidity is the...
a)
Amount of Water Vapor in the Air
b)
Amount of Wind in the Air
c)
Amount of Precipitation in the Air
d)
Amount of Pressure in the Air
59.
Warm air near the Earth’s surface rises and then cools and drops, this creates a _________________ in the atmosphere.
a)
run-off
b)
Greenhouse Effect
c)
convection current
d)
water cylce
60.
Because the earth is spinning on its axis, the global winds appear to curve. This is known as the __________ ________.
a)
Coriolis Effect
b)
Greenhouse Effect
c)
Climate Effect
d)
Atmosphere Effect
61.
What kind of weather is usually associated with a low pressure system?
a)
Sunny weather
b)
Precipitation (rain, snow, etc.)
62.
In what direction do winds always blow?
a)
From areas of high pressure to areas of low pressure
b)
From areas of low pressure to areas of high pressure
63.

The number one thing hurricanes need is...

a)

warm water

b)

cold air from cold fronts

c)

cold water

d)

strong warm front

64.

What causes global convection currents

a)

Forests

b)

greenhouse gases

c)

more land forms

d)

uneven heating of the Earth's surface

65.

What city will experience decreasing temperatures in the next day?

a)

Denver

b)

El Paso

c)

Memphis

d)

Los Angeles

66.

What city is most likely going to see temperatures rise?

a)

San Jose

b)

El Paso

c)

Jacksonville

d)

Chicago

67.

Where do warm ocean currents come from?

a)

warm ocean currents come from the southern hemisphere

b)

warm ocean currents come from the equator

c)

Warm ocean currents come from the poles

d)

Warm ocean currents come from the beach

68.

Where do cold ocean currents come from?

a)

cold ocean currents come from the southern hemisphere

b)

cold ocean currents come from the equator

c)

cold ocean currents come from the poles

d)

cold ocean currents come from the beach

69.

What does this symbol represent?

a)

Cold Front

b)

Warm Front

c)

Stationary Front

d)

Occluded Front

70.

_______ of every year is hurricane season.

a)

July to October

b)

March to May

c)

June to November

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