NEW
Font size
S
M
L
XL
Worksheets8th Grade Science STAAR Review
Total questions: 25
Worksheet time: 6hrs 2mins
Name
Class
Date
1.
a)
4N
b)
6N
c)
10 N
d)
14 N
2.
a)
40,000 N
b)
100 N
c)
100 m/s^2
d)
10,000 kg
3.
a)
The cart was stationary with a velocity of 0 m/s for the entire 7 seconds.
b)
The cart was stationary except for a short burst of acceleration of 0.5 m/s^2 .
c)
The cart moved at a constant velocity of 0.5 m/s for the entire 7 seconds.
d)
The cart accelerated at a constant rate of approximately 0.8 m/s^2 .
4.
a)
The book, the ball, and the car
b)
The ball, the car, and the bird
c)
The can, the swing, and the bird
d)
The book, the ball, the can, and the swing
5.
a)
Procedures 1, 2, and 3
b)
Procedures 4 and 5
c)
Procedures 3 and 4
d)
Procedures 1, 3, and 5
6.
a)
As the fuel burns, gases push against the rocket, moving it upward.
b)
As the fuel burns, gases move out of the rocket and reduce air resistance.
c)
As the fuel burns, the mass of the rocket decreases.
d)
As the fuel burns, the rocket moves faster.
7.
a)
Activity 3 required more work than Activity 1, but Activity 3 did not require more work than Activity 2.
b)
Activity 1 required the same amount of work as Activity 3.
c)
Activity 2 required the most work.
d)
Activity 1 was the only activity that required work.
8.
a)
Airplane W has a greater kinetic energy than Airplane X.
b)
The two airplanes have the same gravitational potential energy but different kinetic energies.
c)
Airplane X has more gravitational potential energy than Airplane W.
d)
The two airplanes have the same kinetic energy but different gravitational potential energies.
9.
a)
0.2 m/s
b)
0.5 m/s
c)
5.0 m/s
d)
10.0 m/s
10.
a)
The toy train speeds up while going forward and then slows down.
b)
The toy train slows down while going forward and then moves backward.
c)
The toy train moves forward at a constant speed, slows down, and then stops.
d)
The toy train moves forward at an increasing speed, stops, and then moves forward.
11.
A teacher rubbed a match against a piece of sandpaper. The match started to burn. Which statement best describes the energy changes that occurred?
a)
The chemical energy stored in the match changed to thermal energy and light energy.
b)
The thermal energy stored in the match changed to light energy and chemical energy.
c)
The light energy and thermal energy stored in the match changed to mechanical energy.
d)
The light energy and thermal energy stored in the match changed to chemical energy.
12.
a)
The Pacific and Nazca plates are both moving to the east.
b)
The Pacific and Nazca plates are both moving to the west.
c)
The Pacific plate is moving to the west, and the Nazca plate is moving to the east.
d)
The Pacific plate is moving to the east, and the Nazca plate is moving to the west.
13.
a)
Less sediment flowed into the river because the fire heated up the soil and made it drier.
b)
The amount of vegetation increased and less sediment flowed into the river because the fire produced ash that mixed with the soil.
c)
More sediment flowed into the river because the fire destroyed most of the vegetation holding the sediment in place.
d)
More sediment flowed into the river because the fire disrupted animal habitats and caused animals to leave the area.
14.
a)
2,050 m
b)
450 m
c)
910 m
d)
3,650 m
15.
a)
The activities prevent most of the water from evaporating into the atmosphere.
b)
Pollutants from the activities percolate through the soil and enter the water table.
c)
The activities replace the groundwater used.
d)
All of the above
16.
a)
The mallard, because it hunts for fish while wading near the edge of the pond
b)
The pied-billed grebe, because it dives in open water to get crayfish on the bottom of the pond
c)
The great egret, because it hunts in water near the edge of the pond for fish and other prey
d)
None of these
17.
a)
Increased gill surface area has allowed the cichlids to change their diet and avoid competing with the Nile perch.
b)
Increased gill surface area has allowed the cichlids to be camouflaged and avoid being eaten by the Nile perch.
c)
Increased gill surface area has allowed the cichlids to leave Lake Victoria and establish populations in nearby bodies of water.
d)
Increased gill surface area has allowed the cichlids to better absorb the limited oxygen in the water.
18.
a)
The functions of living things occur in cells.
b)
Cells exist only in multicellular organisms.
c)
Living things are composed of cells.
d)
Cells contain hereditary information.
19.
a)
Position 1, because North America receives the most direct sun
b)
Position 2, because North America is tilted toward the sun
c)
Position 3, because North America is parallel to the sun
d)
Position 4, because North America is tilted away from the sun
20.
a)
February 5, March 7, April 5, May 4
b)
February 15, March 17, April 15, May 14
c)
February 25, March 27, April 25, May 24
d)
February 29, March 31, April 29, May 28
21.
a)
a main-sequence star in spectral class B
b)
a supergiant in spectral class K
c)
a main-sequence star in spectral class K or M
d)
a white dwarf in spectral class B
22.
The universe has many different components. Which list places four components of the universe in the most likely order from smallest to largest?
a)
Planets, stars, galaxies, nebulae
b)
Nebulae, stars, planets, galaxies
c)
Galaxies, stars, planets, nebulae
d)
Planets, stars, nebulae, galaxies
23.
With the use of the Hubble Space Telescope, scientists recently discovered a giant runaway star. It is 90 times larger than the sun and is very hot and blue-white in color. Why does the sun appear to be brighter than this runaway star when viewed from Earth?
a)
The sun is a different color than the runaway star.
b)
The sun is older than the runaway star.
c)
The sun is closer to Earth than the runaway star.
d)
The sun is made of different elements than the runaway star.
24.
a)
About 46 light-years
b)
390 light-years
c)
Approximately 2800 light-years
d)
7.18 light-years
25.
In July 1994 the comet Shoemaker-Levy 9 collided with the planet Jupiter, as scientists had predicted. To be able to accurately predict when a comet will collide with a planet, it is essential to understand —
a)
the composition of a planet’s atmosphere
b)
the gravitational attraction that exists between all bodies
c)
the attraction of opposite poles of a magnet to each other
d)
the formation of comets
Reset
