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SSA 8th Grade Science Review
SSA 8th Grade Science Review
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6th 8th Grade Science Review
Flashcards
26 cards
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1
Which of the following is used to determine the apparent magnitude of a star?
the number of time the star rotates
the number of prominences the star makes
the distance the star is from the earth
the constellation the star is in
2
What causes a balloon to stick to the wall after you rub it with your hair?
friction
gravity
magnetic force
electric force
3
How do heterotrophs compare to autotrophs?
C) heterotrophs get their food from other sources
B) autotrophs derive their food from other animals
A) Autotrophs make their own food
D) Both A and C
4
What is a limitation of a drawing of a cell compared to a clay model of a cell?
it is not three-dimensional like a real cell
it can't represent the constant motion of the cytoplasm.
can't represent the the main parts of a cell
doesn't contain the correct number of nuclei
5
Which of the following is an example of a chemical change?
candle changing shape
burning candle wick
wax melting
6
Which statement best summarizes the development of the atomic theory?
atomic models showed that the theory was based on opinion
Atomic models proved the theory was accurate
Newly discovered evidence resulted in changes to the theory
Discoveries of every new element changed the theory
7
Which list things from smallest to largest in size?
moon, earth, sun, solar system and milkyway galaxy
galaxy, solar system, sun, earth, moon
earth, moon, sun, solar system, galaxy
8
Which statement decribes how visible light is different from non-visible light?
it travels a different distance through space
it has different amplitudes
it travels at a different speed through space
It has different wavelengths
9
Which statement below is an example of repetition?
conduct four trials of this experiment
Roll a marble down a ramp
Pour 50 ml of water into a beaker
take the mass of 5 rocks
10
What type of heat transfer is depicted below?
completion
convection
complication
conduction
11
What are the parts of the cell theory?
all cells come from preexisting cells
the smallest unit of life is a cell
all of the above
all organisms are composed of cells
12
What property of a magnifying lens is most responsible for enlarging an image?
it can increase the wavelength of light
it can increase the intensity of light
it can reflect light
it can refract light
13
Which of the following conditions would cause the plane to descend toward the ground?
the thrust is greater than the drag
the lift is equal to the drag
the thrust is equal to the weight
the lift is less than the gravity
14
What level of organization is missing from the diagram below?
multicellular
cellular
tissue
15
Which statement best describes the climate of an area?
The high temperature on September4, 2009 was 32 degrees
The average temperature from 1930-1996 was 23 dgrees
there should be heavy rains tomorrow morning
the rains next week are expected to cause flooding
16
Which information does a scientist need to know to determine the age of a rock?
the amount of weathering present on the surface of the rock
the amount of each radioactive element present in the rock
the percentage of each mineral that makes up the rock
the thickness of rock layers that cover the rock
17
Which statement best describes how the human body responds to a cold environment?
the skeletal system makes more blood cells to deliver warmth
Digestive system produces hormones to warm the body
circulatory system delivers less CO2 to the muscles
nervous system causes muscles to contract to warm the body
18
What is the energy conversion that is occuring from the battery through to the light?
D) chemical to electrical to light and heat
nuclear to thermal to chemical
chemical to mechanical to heat to kinetic
potential to chemical to light
19
Describe the heat flow of cubes of ice placed in boiling water
heat flowed from the ice to the water
heat did not flow at all
cold flowed from the ice to the water
heat flowed from the water to the ice
20
What causes the changes of water levels at the beach during the day?
the moon's gravitational pull
Earth's revolution
The moon's rotation
Earth's magnetic feild
21
In which layer of the earth do convection currents occur that move tectonic plates?
crust
mantle
core
inner core
22
Which of the following would result from deforestation?
decreased carbon dioxide
colder temperatures
greater oxygen production
increased erosion
23
Which statement explains why mercury has many more craters than Earth?
Mercury has a smaller mass than earth
Mercury is closer to the sun.
Mercury rotates faster than earth does
Mercury has a thinner atmosphere than Earth
24
Which lists items from smallest to largest in size?
cell, atom, proton, molecule
proton, atom, molecule, cell
molecule, proton, atom, cell,
25
What is true about elements listed in the same column of the periodic table?
they have the same number of protons
they have the same number of neutrons
they have atoms of the same size
They have similar properties
26
Compared to an animal cell what structure(s) is only found in a plant cell?
cell membrane
nucleus
cell wall
mitochondria
