Why can we see only one side of the Moon?

The moon's revolution and rotation periods are the same

Because of the carbondioxide in the atmosphere

When a candle burns, what energytransformation takes place?

Chemical energy to light energy

Which is NOT a result ofscientific inquiry?

Findings that can not be reproduced.

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Questions 80

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1
The process where light energy is trapped in a plant'schlorophyll and produces sugars is called
acceleration
respiration
photosynthesis
mitosis
2
Approximately what is theage of the Solar System?
13-14 million years
13-14 billion years
4-5 million years
4-5 billion years
3
The variable in an experiment that is measured by the investigator isthe _____.
Dependent Variable
Constant Variable
Independent Variable
Control Group
4
What is the smallest particle of an element?
compound
atom
molecule
mixture
5
Long period comets come from the ______.
Kuiper Belt
Oort Cloud
Kuiper Cloud
Oort Belt
6
Carbon dioxide enters a plantthrough its __________.
flowers
trunk
roots
leaves
7
Why can we see only one side of the Moon?
The sun only shines on that side of the moon.
The moon's revolution and rotation periods are the same
The moon does not rotate
The moon revolves more slowly than Earth
8
What should you do if you want to decrease the rate ofa chemical reaction?
heat the substance
break substances into smaller pieces
add an inhibitor
add a catalyst
9
Where are ribosomes produced? Pick the BEST answer.
In the nucleolus
In the nucleus
In the ribosomes
In the mitochondria
10
If an atom had 9 protons 10 neutrons and 8 electrons it would be
an isotope
a negative ion
an anion
a cation
11
The smallest part of a compound that still has theproperties of that compound is a(n)
atom
electron
proton
molecule
12
A change in which one or more substances are convertedinto new substances is a __________.
chemical change
physical change
nuclear change
chemical fusion
13
Which is asubstance made up of only one kind of atom?
mixture
element
compound
solution
14
A comet develops a tail because of ___.
Energy from the Sun
Earth's atmosphere
The Oort Cloud
Jupiter's gravitational pull
15
Why is Venus hot?
Because of the carbondioxide in the atmosphere
Because of its position inthe Solar System
Because of the volcanoes
Because of its closeness tothe Sun
16
What is the diagram that shows luminosity and size of stars called?
Hertzsprung-Russell diagram
Hipparchus diagram
apparent magnitude scale
Lister-Rimmer diagram
17
You can separate sugar from sand because sugar is _____ and sand is not.
acidic
soluble in water
malleable
conductive
18
Density depends on__________.
weight
mass
volume
mass and volume
19
This planet has no atmosphere.
Venus
Mercury
Mars
Saturn
20
Which does NOT happen during a chemical reaction?
a new substance forms
atoms are rearranged
energy is created or destroyed
chemical bonds are broken
21
In which organelle does protien synthesis take place?
Golgi Bodies
Ribosomes
Smooth Endoplasmic Reticulum
Mitochondria
22
Which of the following describes a pattern or an event in nature thatis always true?
Scientific law
Scientific Experiment
Scientific truth
Scientific theory
23
Which of the following is a solution?
sand in water
oil in water
all of these
ocean water
24
When a candle burns, what energytransformation takes place?
Thermal energy to mechanical energy
Thermal energy to chemical energy
Radiant Energy to Light Energy
Chemical energy to light energy
25
Venus and Earth bothexperience a _____ because of heat trapped by their atmospheres.
cooling effect
slow rotation
cloud cover
greenhouse effect
26
Two of the inner planetsare ______.
Venus and Saturn
Earth and Neptune
Mars and Venus
Mercury and Jupiter
27
Which is a way to describe achemical reaction using chemical formulas and symbols?
a physical equation
a mathematical equation
a synthesis equation
a chemical equation
28
Which of the following isNOT a branch of Science?
Earth
Life
Physical
Biodiesel
29
The Milky Way is amember of the Local Group which is a cluster of about how many galaxies?
30
300
3
3,000
30
What is the function of photosynthesis?
the release of energy
the production of bright flowers
the storage of energy
the production of seeds
31
How many dots wouldthere be in an electron diagram for silicon, one of the group 14 elements?
2
8
14
4
32
Which is NOT a result ofscientific inquiry?
Finding solutions to problems.
Findings that can not be reproduced.
New materials
Technology
33
Short period comets come from the ______.
Oort Cloud
Oort Belt
Kuiper Cloud
Kuiper Belt
34
____ is the largestplanet in the Solar system, and is the 5^th planet from the sun.
Jupiter
Neptune
Uranus
Saturn
35
The chemical formula for a compound tells __________.
how stable the compound is
what elements it contains
how electrons are arranged
what type of chemical bond it forms
36
What does the nucleus of an atom contain?
protons & electrons
protons, neutrons &electrons
protons & neutrons
electrons & neutrons
37
Which is produced by photosynthesis?
a mix of sugars
glucose
sucrose
fructose
38
After sugar has been stirred into water, no sugar can be seen. What happened to it?
the sugar dissolved
the sugar evaporated
the sugar melted
the sugar disappeared
39
Scientists classify stars according to which of these?
spectra
mass
temperature
size
40
What term refers to cloudsof gas and dust where stars form?
white dwarf
black hole
supernova
nebula
41
What should you do if you want to increase the rate ofa chemical reaction?
cool the substances
add an inhibitor
add a catalyst
leave it alone
42
At which time ofthe year is the number of daylight and dark hours equal?
March equinox
December solstice
December equinox
July solstice
43
Which of the following describes most combustionreactions?
synthesis
inhibited
exothermic
endothermic
44
If an atom had 9 protons 10 neutrons and 10 electrons it would be
a cation
an anion
a positive ion
an isotope
45
Measuring the average energy of motion of the particles in a substanceis the same as measuring
the substance's density
the substance's pressure
the substance's temperature
the substance's mass
46
What can be found in the nucleus of a cell?
Ribosomes
DNA
RNA
Amino Acids
47
By studying a star's spectra, scientists can determine_____ found in the star's atmosphere.
dust
elements
rocks
clusters
48
All of the followingare characteristics of waves except
amplitude
mass
frequency
wavelength
49
New substances produced by a chemical reaction are_________.
products
resultants
coefficients
reactants
50
What color of stars tend tohave the most mass?
orange
blue
red
yellow
51
In which organelle does cellular respiration take place?
Ribosomes
Mitochondria
Smooth Endoplasmic Reticulum
Golgi Bodies
52
Solar energy trapped bygasses in Venus’s atmosphere causes ____.
the greenhouse effect
clouds to form
a cooling effect
its slow rotation
53
What is matterthat is made up of two or more different kinds of atoms joined by chemicalbonds?
compound
element
metal
noble gas
54
During which phases of the Moon do spring tides occur?
new moon and full moon
third quarter and first quarter
only the full moon
First quarter and new moon
55
In the Sun’s convection zone ______
hot gasses are cooled intosolids.
hot gas moves up and coolgas moves down.
iron is fused into heavierelements.
cool gas moves up and hotgas moves down.
56
An explanation ofobservations of events based on knowledge gained from many experiments is a:
Scientific theory
Scientific truth
Scientific experiment
Scientific law
57
Which is asubstance made up of only one kind of atom?
compound
mixture
element
solution
58
A 10g sample of butter will melt at 34 C. What temperature will a 20g sample of butter melt?
34 C
68 C
136 C
17 C
59
The Moon orbits Earth and Earth orbits the Sun. Whatdoes the Sun orbit?
it doesn't orbit
the Solar System
the Universe
the Milky Way
60
What is thephrase given to the combination of several atomic nuclei into one largenucleus?
chemical fusion
nuclear fission
nuclear fusion
star fission
61
Whatterm refers to matter that emits no light at any wavelength?
dark energy
clusters
light matter
dark matter
62
Approximately what is theage of the universe?
4-5 billion years
13-14 million years
4-5 million years
13-14 billion years
63
What happens tothe hydrogen in the core of a star?
It is slowly destroyed.
Over time it will fuse intomore complex elements.
It stays constant.
It slowly dissipates into space.
64
What does a high absolutemagnitude say about a star?
it is very close
it is very faint
the star is very bright
it is very far
65
What do scientists think is the cause of Uranus’stilted orbit?
It formed that way.
The temperature in space caused the planet to tilt.
It collided with anotherobject in space.
It is the result ofUranus’s distance from the Sun.
66
Science can NOT answer questions about _______.
the natural world
politics
temperature
distance
67
Anything other thana solvent in a solution is called the
solution
solute
solubility
solvent
68
Which particle is directly involved in chamical changes?
proton
neutron
electron
necleus
69
What are the small openings on the epidermis of plantleaves called?
mitochondria
mesophylls
chloroplasts
stomata
70
Which is the largest object in the Solar System?
Earth
the Sun
Jupiter
Neptune
71
The yearly motion of Eartharound the Sun is called its
ellipse
revolution
tilt
rotation
72
One astronomical unit is approximately equal to_______.
The distance from the Earth to the Sun
250 million km
The distance from Pluto to the Sun
75 million km
73
Which of the following statesof matter has a definite shape?
solids and liquids
solids only
liquids only
liquids and gasses
74
Which organelle packages items?
Smooth Endoplasmic Reticulum
Golgi Bodies
Mitochondria
Ribosomes
75
Anything that takes upspace and has mass is __________.
volume
a mixture
density
matter
76
Liquids were poured in a glass and they separated into 4 layers.Which has the highest density?
the layer at the bottom
the second layer from the top
the second layer from the bottom
the layer on top
77
What is represented by thedots in an electron dot diagram?
the number of electrons circling the nucleus
the number of atoms sharing an electron
the number of valence electrons in an atom
the total number of electrons in an atom
78
To evaluate the observations you make, you must use _____.
opinions
tools
critical thinking
none of these
79
Which processbreaks down food molecules and releases energy?
photoperiodism
meiosis
cellular respiration
photosynthesis
80
The three branches of science are _____, Earth/Space, and physical.
physics
anatomy
life
chemistry

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