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Dr. Potts - Semester One Exam Review

Total questions: 96

Worksheet time: 2hrs 55mins

Name
Class
Date
1.

The _ is an organized set of investigation procedures used by scientists.

a)

scientific method

b)

scientific law

c)

scientific theory

2.

A(n) _ is a factor that doesn't vary in an experiment.

a)

constant

b)

control

c)

independent variable

3.

The factor whose value depends on the independent variable is the _.

a)

experiment

b)

constant

c)

dependent variable

4.

Process that uses observations and investigation to gain knowledge about events in nature is called _.

a)

science

b)

predicting

c)

inferring

5.
Justin blows his nose, but mucus seems to leak through the tissue.  He decides to test which tissue holds up the best while sneezing.  What is the independent variable?
a)
sneezing
b)
Justin
c)
amount of tissue
d)
type of tissue
6.

Marcia did an experiment to find out whether tulips grow faster under fluorescent lighting or incandescent lighting. Under flourescent lighting, Marcia's plants grew 1.5 cm taller in two months. She gave her notes to Alex, who did the same experiments with similar results. Which term describes Alex's experiment?

a)

plagiarism

b)

replication

c)

pseudo science

d)

repitition

7.

What is the best definition of the term "theory", as it’s used in science?

a)

What is the best definition of the term "theory", as it’s used in science?

b)

It is well tested set of ideas that explains events that occur in nature.

c)

A theory is based on laws that can be proven true.

d)

It is a hypothesis that has been confirmed

8.

Read the law of conservation of energy in the box below.

The total energy of an isolated system

is constant; energy may be changed from one form to another, but may not be

created nor destroyed.

Why is this a scientific law?

a)

because it explains a concept in science, and any topic in science can be turned into a scientific law

b)

because it describes a specific relationship under given conditions in the natural world

c)

because it can be controlled by human actions

d)

because it describes energy and how it transfers

9.
What step does every scientific experiment begin with?
a)
hypothesis
b)
question/problem
c)
procedures
d)
conclusion
10.

Why do we use models?

a)

Building something by hand makes science more fun

b)

to represent things that are too small to see, or that are too large to see. They can be used to explain the past and predict the future.

c)

to determine the difference between the independent and dependet variable

d)

to encourage better peer review

11.

Photosynthesis changes light energy into chemical energy and stores the chemical energy as _____________

a)

water

b)

sugar (glucose)

c)

carbon dioxide.

12.

In what cell organelle does photosynthesis take place?

a)

cytoplasm

b)

Nucleus

c)

chloroplast

13.

Which of the following is the correct reaction for photosynthesis?

a)

sunlight + carbon dioxide + water --> glucose + oxygen

b)

glucose + oxygen --> carbon dioxide + water + ATP

c)

oxygen + water --> carbon dioxide + glucose

14.

Carbon is removed from the atmosphere through which process?

a)

photosynthesis

b)

factory emmisions

c)

cellular respiration

15.

During cellular respiration, cells use _______and _______ to produce carbon dioxide, water, and ATP.

a)

oxygen : glucose sugar

b)

carbon dioxide : glucose sugar

c)

water : oxygen

16.

Cellular respiration releases the energy available in food to make _______; a cell’s useable form of energy.

a)

DNA

b)

water

c)

ATP

17.

In which cell organelle does cellular respiration take place?

a)

Nucleus

b)

Cytoplasm

c)

Mitochondria

18.

Which organisms perform cellular respiration?

a)

Plant

b)

Animal

c)

Both plants and animals

19.

If the forest disappeared what would you predict will happen to the carbon dioxide in the atmosphere?

a)

increase

b)

decrease

c)

stay the same

20.

How do plants and animals help each other?

a)

Plants produce oxygen for animals and animals produce carbon dioxide for plants

b)

Plants produce carbon dioxide for animals and animals produce oxygen for plants

c)

Plants and animals do not help each other

21.
Molecules are closest together in a 
a)
Solid
b)
Liquid
c)
Gas
d)
plasma
22.
Which state of matter has particles arranged like this?
a)
solid
b)
liquid
c)
gas
23.
Which state of matter has particles arranged like this?
a)
solid
b)
liquid
c)
gas
24.
Which of the following statements describes a solid?
a)
It has a fixed shape
b)
It takes the shape of it's container
25.
Which of the following statements describes a liquid?
a)
It has a fixed shape
b)
It takes the shape of it's container
26.
A chemical change
a)
doesn't really change much.
b)
creates a new substance
c)
is a change in the state of matter
27.

Which two words are ways to describe luster

a)

bright, dark

b)

light, dark

c)

shiny, dull

d)

sparkly, smooth

28.

Q6: Anything that has mass or takes up space is known as...

a)

matter

b)

objects

c)

physical properties

d)

science

29.

What is mass?

a)

anything that takes up space

b)

the amount of matter an object has

c)

the amount of space an object takes up

d)

the measure of how warm something is

30.
What is the volume of the fish?
a)
18.0 cm3
b)
6.0 cm3 
c)
38.0 cm3
31.
Hot air rising from a campfire is...
a)
Conduction
b)
Convection
c)
Radiation 
32.

Which of the following has the least amount of energy?

a)

UV rays

b)

The color yellow

c)

Radio waves

d)

Gamma rays

33.
Temperature is the measurement of the average ________ energy of the molecules in an object
a)
Kinetic 
b)
Heat
c)
Motion
d)
None of the above
34.
Matter can by _____________ over and over again, and energy is needed for recycling matter. ___________ is not recycled, but it is converted from one form to another.
a)
destroyed,  matter
b)
recycled, energy
c)
destroyed, energy
35.

Metal are better conductors because they...

a)

Are harder

b)

Bend easily

c)

Have free-ranging electrons that move around very quickly

36.

Which of the following has the longest wavelength?

a)

microwaves

b)

UV rays

c)

Infrared

d)

Gamma rays

37.
The roller coaster cart has the most gravitational potential energy at position-
a)
W
b)
X
c)
Y
d)
Z
38.
People get energy from the food that they eat and transform that energy as they move. Which energy transformations occur as a student rapidly rubs the palms of his hands together?
a)
mechanical to thermal to electrical
b)
chemical to mechanical to thermal
c)
mechanical to chemical to sound
d)
chemical to sound to electrical
39.
Which example below is an example of radiation?
a)
Standing on a hot metal bridge
b)
The attic is warmer than the basement
c)
The Sun heating the Earth
d)
Touching hot sand with your feet
40.

Select the correct order of waves on the EMS (least energy to the most energy)

a)

Radio, Micro, Infra, Visible, Ultra, X-ray, Gamma

b)

Gamma, X-ray, Ultra, Vis, Infra, Micro, Radio

c)

Vis, Micro, Infra, Ultra, X-ray, Gamma, Radio

d)

Micro, Radio, Vis, Infra, Ultra, X-ray, Gamma

41.

Scientists frequently repeat the experiments of others scientists. Why is this important in science?

a)

Scientists often ask each other for help in performing experiments.

b)

Replication of experiments helps to confirm and verify results.

c)

Scientists frequently perform other scientists’ experiments in order to practice their technique.

d)

Repeating experiments is an effective way to make sure a laboratory is in optimal condition.

42.

Cara read an article on why repetition and replication are so important, but she did not understand the difference between them. Which of the following best explains the two terms?

a)

Repetition is when a scientist repeats an experiment; replication is when a scientist conducts an experiment on genetic material.

b)

Repetition is when a scientist does the same experiment a number of times; replication is when other scientists reproduce a scientist’s experiment.

c)

Repetition is when a scientist publishes in more than one scientific periodical; replication is when another scientist reproduces another scientist’s results.

d)

Repetition is when a scientist commits an error in an experiment the first time and must repeat it; replication is when a scientist repeats an experiment to make sure it is valid.

43.
The type of variable plotted on the x-axis.
a)
independent
b)
dependent
c)
control
d)
constant
44.

Helen is studying the growth of two different types of plants. She planted two of each type of plant in locations with different levels of sunlight: full sun, partial shade, and full shade. For five weeks, Helen records the number of new leaves on each plant.

Which of the following statements correctly describes the independent and dependent variables in Helen's experiment?

a)

The independent variable is the kind of plant, and the dependent variable is the amount of sunlight.

b)

The independent variable is the amount of sunlight, and the dependent variable is the number of new leaves.

c)

The independent variable is the amount of sunlight, and the dependent variable is the kind of plant.

d)

The independent variable is the number of new leaves, and the dependent variable is the amount of sunlight.

45.
Contains only one kind of atom.
a)
Element
b)
Compund
c)
Mixture
46.
Contains two or more atoms combined
a)
Elements
b)
Compounds
c)
Mixtures
47.
The air is a _________. 
a)
element 
b)
mixture 
c)
compound 
d)
energy 
48.
Is sugar (C12H22O11) an element or a compound?
a)
Element
b)
Compound
49.
What is salad?
a)
element
b)
compound
c)
mixture
50.
The building block of matter is
a)
Mixture
b)
Atom
c)
Element
d)
Substance
51.
A pure substance...
a)
is an element or a compound
b)
is an element or a mixture
c)
is a compound or a mixture
d)
is a mixture
52.
The horizontal row on the periodic table is called a
a)
group
b)
family
c)
period
d)
atomic number
53.
A vertical column is called...
a)
group
b)
tower
c)
period
d)
crew
54.
The number at the bottom of each square on the periodic table is the ...
a)
atomic number
b)
atomic mass
c)
chemical symbol
d)
element name
55.

As you move left to right on a row or period what happens?

a)

Atomic number increases by 1

b)

Electrons decrease

c)

Number of shells decrease

d)

Nothing

56.

What happens to the number of shells as you move down a group?

a)

They decrease by 1

b)

They increase by 1

c)

Nothing

57.

All elements in the same row have the same number of shells.

a)

True

b)

False

c)

Sometimes

58.

We use M.A.N. to find the number of .....

a)

Protons

b)

Electrons

c)

Neutrons

d)

Shells

59.
Sodium (Na) is found in period 
a)
3
b)
2
c)
4
d)
1
60.
The atomic number tells you what?  READ THE ANSWERS CAREFULLY
a)
only the number of electrons
b)
 only the number of protons
c)
only the number of neutrons
d)
the number of both electrons and protons in an atom.
61.
What does the 6 represent?
a)
atomic mass
b)
atomic number
c)
element name
d)
chemical symbol 
62.

A subatomic particle that has a negative charge

a)

noble gases

b)

protons

c)

electrons

d)

neutrons

63.
If an object has a density of .6 g/mL and you put it into water, will it sink or float?  
a)
sink
b)
float
64.
What is the formula for density?
a)
density = mass x volume
b)
density = mass / volume
c)
density = mass + volume
d)
density = mass - volume
65.
Helium balloons rise on earth because
a)
helium is less dense than air
b)
helium is more dense than air
c)
helium is cooler than air
d)
helium is warmer than air
66.
When something new is created or a substance is broken down into diffrent chemicals, you have a chemical change.
a)
True
b)
False
67.
Is burning wood a chemical or physical change?
a)
chemical
b)
physical
68.
Which is a physical change?
a)
burning match 
b)
vinegar in baking soda 
c)
melting butter
d)
cooking an egg
69.
What type of mixture is this?
a)
heterogeneous 
b)
homogeneous
70.

In a solution the substance that dissolves in the solvent.

a)

Solute

b)

Suspension

c)

Colloid

d)

Solvent

71.

In a solution the substance which the solute dissolves

a)

solvent

b)

suspension

c)

colloid

d)

solution

72.

Which statement is true about compounds?

a)

a pure substance where two or more elements are chemically combined

b)

a homogenous mixture of 2 or more elements

c)

a pure substance containing only one type of atom

d)

a heterogeneous mixture of 2 or more elements chemically combined

73.

2. Which element has the most similar properties with boron?

a)

A) Silicon

b)

B) Gallium

c)

C) Carbon

d)

D) Fluorine

74.

Metals are considered malleable. What does malleable mean?

a)

Brittle

b)

Can bend to a certain point without breaking

c)

Good conductor of heat

d)

Poor conductor of heat

75.

This atom has....

a)

4 protons

b)

5 electrons

c)

6 protons

d)

6 neutrons

76.

Most of the mass of an atom is because of the total mass of the .......

a)

The electrons and protons

b)

The protons & neutrons

c)

The electrons and neutrons

d)

The electron cloud

77.

How many electrons does an atom of silver have?

a)

107.87

b)

60.87

c)

60

d)

47

78.

APE-MAN means that.....

a)

Atomic mass, Atomic number & electrons are all the same #

b)

Atomic #, Protons, and electrons are always the same #

c)

Atomic number - Atomic mass = Neutrons

d)

Mass - electrons = Neutrons

79.

The element in period 5, group 4 is?

a)

Dubnium (Db)

b)

Antimony (Sb)

c)

Tin (Sn)

d)

Zirconium (Zr)

80.

Which of these particles is the smallest?

a)

electron

b)

neutron

c)

atom

d)

proton

81.

All atoms of the periodic table are considered to be neutral because.....

a)

They all have neutrons which are neutral in charge

b)

Electrons and protons do opposite things in the atom

c)

Neutrons and electrons have the same charge

d)

The number of electrons equal the number of protons

82.

Pure substances include:

a)

Elements

b)

Homogeneous Mixtures

c)

Compounds

d)

Heterogeneous Mixtures

83.
What are the 3 particles that make-up the atom?
a)
protons, neutrons, and isotopes
b)
neutrons, isotopes, and electrons
c)
positives, negatives, and electrons
d)
protons, neutrons, and electrons
84.
What's a valence electron?
a)
electrons in the second energy level
b)
electrons in the outermost energy level
c)
the atomic number
d)
electrons in the first level
85.

In a ______________, one substance is dissolved in another substance.

a)

solution

b)

suspension

c)

colloid

86.

What best explains the graphic and information that you see above?

a)

The astronaut's weight and mass are the same, because weight and mass measure the same thing.

b)

The astronaut's weight and mass are the different, because density varies when you travel to outer space.

c)

The astronaut's mass changes as he travels to different places because the gravitational pull is different in each place.

d)

The astronaut's weight changes as he travels to different places because the gravitational pull is different in each place.

87.

How do you get the volume of an irregularly shaped object?

a)

V= L x W x H

b)

V= M/D

c)

Water Displacement

d)

Using a scale

88.

_____________is a measure of the average kinetic energy of all particles in an object

a)

Weight

b)

Volume

c)

Mass

d)

Temperature

89.
Combustion is another word for __________.
a)
Transportation
b)
Respiration
c)
Fossil Fuels
d)
Burning
90.
Carbon can be found in...
a)
The atmosphere
b)
Soil
c)
Fossil fuels
d)
All of the above
91.
Which of the following removes carbon from the atmosphere?
a)
Combustion
b)
Respiration
c)
Photosynthesis
d)
Death
92.
All of the carbon in existence is continually recycled in the carbon cycle
a)
True
b)
False
93.
Organisms that do not decompose can be buried and become what?
a)
water
b)
nutrients
c)
air
d)
fossil fuels
94.
If the plant population decreased, the amount of carbon would _________.
a)
Stay the same
b)
Increase
c)
Decrease
95.

Why is burning fossil fuels harmful?

a)

they cause cancer

b)

They can get extremely hot

c)

it increases the amount of carbon dioxode/greenhouse gases in the air

d)

this would destroy fossils

96.
What is the an important element for living things.
a)
Neon
b)
Hydrogen
c)
Helium
d)
Carbon

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