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8th Grade Science 4
Test Description: 8th grade science review 4
Instructions: Answer all questions to get your test result.
1) If all the following objects are traveling the same speed, which of the following would experience the greatest amount of friction?
A
10.5 kilogram (kg) object
B
100 gram (g) object
C
100.5 gram (g) object
D
1.50 kilogram (kg) object
2) Which of the following correctly orders the layers of Earth from MOST to LEAST dense?
A
crust, lithosphere, asthenosphere, mantle, outer core, inner core
B
Inner core, outer core, mantle, asthenosphere, lithosphere, crust
C
Inner core, outer core, mantle, lithosphere, asthenosphere, crust
D
curst, asthenosphere, lithosphere, mantle, outer core, inner core
3) Which of the following objects has the greatest average speed?
A
an object that traveled 100 meters in 20 seconds
B
an object that traveled 200 meters in 20 seconds
C
an object that traveled 200 meters in 10 seconds
D
an object that traveled 100 meters in 10 seconds
4) How do seismic waves from an earthquake such as primary (P) waves travel through all the layers of the Earth?
A
seismic waves transmit energy and matter
B
seismic waves transmit matter not energy
C
seismic waves transmit energy not matter
D
seismic waves are electromagnetic waves
5) Which of the following describes a destructive wave?
A
a 10 mm crest interacting with a 10 mm trough
B
a 10 mm crest interacting with a 100 mm crest
C
a 10 mm crest interacting with a 10 mm crest
D
a 10 mm crest interacting with a 100 mm trough
6) What would happen to the length of day and the length of night if the rotation of Earth increased in speed?
A
The length of day would be shorter and the length of night would be longer
B
The length of day would be longer and the length of night would be longer
C
The length of day would be shorter and the length of night would be shorter
D
The length of day would be longer and the length of night would be shorter
7) Which of the following statements about the Universe is true?
A
Stars are moving away from Earth, wavelengths of light are blueshifted and the universe is expanding
B
Stars are moving away from Earth, wavelengths of light are redshifted and the universe is contracting
C
Stars are moving toward from Earth, wavelengths of light are redshifted and the universe is expanding
D
Stars are moving away from Earth, wavelengths of light are redshifted and the universe is expanding
8) Which of the following correctly orders eras of geologic time from oldest to most recent?
A
Paleozoic, Mesozoic, Cenozoic
B
Cenozoic, Mesozoic, Paleozoic
C
Paleozoic, Cenozoic, Mesozoic
D
Mesozoic, Paleozoic, Cenozoic
9) Which of the following is true about the inner and outer planets of our Solar system?
A
The inner planets revolve around the Sun and rotate faster than the outer planets
B
The inner planets are small and terrestrial and the outer planets are larger and gaseous
C
The inner planets are larger and gaseous and the outer planets are small and terrestrial
D
The inner planets all have moons and the outer planets all have rings
10) Which of the following BEST describes a tectonic hot spot such as Hawaii?
A
A major belt of volcanoes that rims the Pacific ocean
B
An area where magma from deep within the mantle melts through the crust above it
C
A section of the lithosphere that slowly moves over the asthenosphere carrying oceanic crust
D
Pieces of Earth's lithosphere that are in constant motion, driven by convection currents in the mantle
11) Which of the following are surface features found on Earth at subduction zones?
A
Volcanoes, rift valleys, and earthquakes
B
Deep sea trenches, volcanoes, and earthquakes
C
Hot spots, deep sea trenches, and volcanoes
D
New crust, sea floor spreading and mountains
12) During which moon phases would Earth experience the least tidal range between high and low tides?
A
1st quarter and last quarter moon phases
B
waning gibbous and waning crescent moon phases
C
New moon and full moon phases
D
waxing crescent and waxing gibbous moon phases
13) Which of the following is true about most tectonic plate boundaries along the ocean floor?
A
New crust is being destroyed as tectonic plates are converging causing earthquakes
B
New crust is being destroyed as tectonic plates are diverging causing earthquakes
C
New crust is being formed as tectonic plates are converging causing earthquakes
D
New crust is being formed as tectonic plates are diverging causing earthquakes
14) Fossils of many marine organisms have been discovered throughout much of South Carolina. What does this evidence suggest?
A
Much of South Carolina was once much warmer in the distant past
B
Much of South Carolina was once under water in the distant past
C
Much of South Carolina was once a desert water in the distant past
D
Much of South Carolina was once a tropical rain forest in the distant past
15) Which of the following best explains the Cambrian explosion?
A
the first period of Earth's history with a sudden appearance in the fossil record of complex animals
B
a large group of related organisms died out and has no living members
C
Large scale volcanic eruptions which caused organisms to quickly change over time
D
A large impact event that caused global climate changes
16) On a time-distance graph when a line is straight and not curved which of the following is true?
A
The object decreased in speed
B
The object was traveled back to the reference point
C
The object traveled at a constant speed
D
The object increased in speed
17) If you push against raft with with 24 N to the right? What do you predict would happen according to Newton's 3rd law of motion?
A
The raft moves 24 N to the left
B
The raft continues to move in the same direction due to inertia
C
The force of the raft is equal to it's mass X acceleration
D
The raft moves 24 N to the right
18) When you listen to music on your cellphone which of the following is the medium that is transmitting the sound energy from your phone to your eardrum?
A
cellphone
B
air particles
C
Speaker
D
electrical wires
19) Which of the following would be a local impact of a large volcanic eruption?
A
decrease in the amount of average rainfall
B
reduced soil quality
C
reduced water quality
D
decrease in the amount of earthquakes
20) Which of the following accurately explains why gamma rays have more energy than radio waves?
A
Gamma rays have shorter wavelengths and a higher frequency
B
Gamma rays have longer wavelengths and a higher frequency
C
Gamma rays have shorter wavelengths and a lower frequency
D
Gamma rays have longer wavelengths and a lower frequency
*select an answer for all questions
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