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7th Grade Science ECA Review-GMS Flashcards | StudBud
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7th Grade Science ECA Review-GMS
7th Grade Science ECA Review-GMS
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A #7th Grade #Science #ECA Review for the #end of the year #GMS
Flashcards
30 cards
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Practice quiz
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Questions
30
Answers
1
Which of the following is true about the layers of the Earth?
the crust is the thickest layer
the inner core is the coldest layer
the inner core is the densest layer of the Earth
the crust is the hottest layer
2
Which describes changes in matter during phase changes?
particles of matter get larger when a substance freezes
mass is neither lost nor added
particles of matter have more kinetic energy in solid phase
mass is gained when a substance freezes
3
An object's speed or direction of motion can be changed if a(n) ___________ force acts on it.
balanced
unbalanced
electrical
frictional
4
What does the Law of Conservation of Energy say?
Energy can be slowly destroyed
The amount of energy decreases
Energy can be created
Energy can be changed from one form to another
5
Which of the following is a characteristic of a good index fossil?
fossil closely resembles many other types of fossils
organism was restricted to only one location on Earth
organism lived only during a short part of Earth's history
only 1 specimen of the fossil is found in a given rock layer
6
Heat and pressure creates what kind of rock?
sedimentary rock
conglomerate rock
metamorphic rock
igneous rock
7
Engineers make a prototype of a new environmentally friendly container. What's next?
tweek the prototype
brainstorm more problems in society
test the prototype
sell it to consumers
8
What is the function of the cell wall?
to provide structural support for a plant cell
to contain the genetic information of an organsim
to package proteins in an animal cell
to transport materials throughout a cell
9
What is the smallest unit of life?
atoms
molecules
cells
elements
10
In what way does the digestive system interact with the circulatory system?
digest. breaks down food which are distributed by circulator
digestive system supplies the circulatory with blood
circulatory supplies the digestive with nutrients
digestive filters waste out of the blood in the circulatory
11
A wind mill farm is an example of
chemical energy of the spinning blades
potential energy of the spinning blades
mechanical energy of the spinning blades
elastic energy of the spinning blades
12
In living organisms, more cells are created for growth and repair through the process of
mitosis
cell specialization
photosynthesis
predation
13
How is heat transferred for conduction?
through electromagnetic radiation
by currents
without any contact
by 2 objects that are in direct contact
14
If you add energy to molecules, how will they react?
speed up and move closer together
slow down and move further apart
slow down and move closer together
speed up and move further apart
15
Which of the following is NOT an example of convection currents?
the currents in the mantle making the tectonic plates move
while holding a hot cup of coffee your hands warm up
when hot air rises from a vent and warms the room
atmospheric currents move from one region to another
16
In physical changes in matter, the amount of substance remaining is
the same as what you started with
more than what you started with
impossible to figure out
less than what you started with
17
Which organelle is responsible for helping animal cells to convert energy?
mitochondria
chloroplasts
cell wall
ribosomes
18
What earth process is needed to change any kind of rock into an igneous rock?
heat and pressure
weathering and erosion
compacting and cementation
melting and recrystallize
19
Indiana needs to increase the amount of electric power it produces. What would be a good option
solar
biomass
wind
coal
20
When scientists talk about many millions of years of Earth's history, how are they classified?
epochs
eras
eons
periods
21
How are plant cells different from animal cells?
Only animals have cytoplasm and DNA
Only plants have cell membrane and vacuoles
Only animals have ribosomes and nucleolus
Only plants have cell wall and chloroplasts
22
Which of the following is a non-renewable resource?
wind
water
sunlight
oil
23
To figure out an independent variable in an experiment, what should you ask your self?
What is being changed?
Why are we doing this?
What is being measured?
What are we doing?
24
With Newton's 2nd Law, how can you determine acceleration if you know the force and mass?
a=Fm
a=mF
a=F/m
a=m/F
25
When a gas changes into a liquid, it is called _______, and the speed of the molecules is _____
condensation, increasing
sublimation, increasing
evaporation, decreasing
condensation, decreasing
26
What is the relationship between molecules and atoms?
molecules are made of atoms
they are the same
atoms are made of molecules
elements are made of molecules
27
Earth's outermost layers is divided into several tectonic plates. Which is TRUE?
Some plates move toward, away or alongside each other
all plates move toward each other
All plates move away from each other
Plates move toward or along side each other, but never away
28
To figure out the dependent variable in an experiment, what should you ask your self?
Why are we doing this?
What is being changed?
What is being measured?
What are we doing?
29
When playing baseball, the bat applies a force to the ball. At the same time, the ball
does not apply any reaction force to the bat
applies equal force in the same direction as the bat's force
applies a weaker force in the opposite direction of the bat
applies an equal but opposite force to the bat
30
Newton's 2nd law can be expressed by the following formula F = m X a. This indicates that
as the mass increases, the force increases
as the acceleration decreases, the force increases
as the acceleration increases, the force decreases
as the mass decreases, the force increases
