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NMS Physics Olympics
NMS Physics Olympics
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2008/11/13 8th Grade Science MCAS questions.
Flashcards
60 cards
F
Practice quiz
P
Host live
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Questions
60
Answers
1
Which of the following do water (H
2
O),rust (Fe
2
O
3
), and salt (NaCl) have in common?
they are mixtures
they are atoms
they are elements
they are compounds
2
Which body system attacks, and destroys foreign cells or substances that may cause disease?
Excretory
Immune
Digestive
Circulatory
3
A scientist wants to collect bird eggs on an island. Which case would best protect the eggs?
a strong wooden case with lightweight plastic lining
a hard metal case with flexible foam lining
a lightweight wooden case with strong aluminum lining
a flexible metal case with smooth plastic lining
4
Workers dug holes in the ground and filled them with steel and concrete. What was being built?
the walls
the foundation
the plumbing
the floor
5
Which of the following provides the best evidence that Earth has evolved over geologic time?
deposits of sediment found at the mouth of a river
rock containing fossilized seashells found on a mountaintop
coral reefs that slowly changed size
desert sand dunes that were shaped by winds
6
A ravine is found where a bridge needs to be constructed. What should the engineer do next?
make a drawing to plan the bridge
research bridge designs
gather materials to build the bridge
construct a prototype
7
Which statement best describes one way the Moon is different than the Earth?
the Moon is not solid
the Moon receives almost no solar light
the Moon doesn't have gravity
the Moon has almost no atmosphere
8
Which of the following statements best describes the directions that heat will move?
from the 10O tube to the water and the water to the 50O tube
From the water to both test tubes
From both test tubes to the water
from the 50O tube to the water and the water to the 10O tube
9
The biker goes for 2hrs. He passes a 1km marker every 3 min, what is his average speed over 2hr
10 km/hr
15 km/hr
25 km/hr
20 km/hr
10
Which device was most likely used to convert the drawing on paper into an electronic format
wireless router
internet modem
scanner
printer
11
Why is ocean water warmer on the top versus the bottom?
Waves transfer heat from the bottom of the ocean to the top
Water at the bottom contains dissolved solids
Friction is created by surface currents
Water at the surface absorbs more energy from the Sun
12
Which of the following units best represents the density of an object?
hr
g/cm3
m/s2
kg
13
Which part of a plant cell has a function that is most similar to that of an animal skeleton?
nucleus
chloroplast
cell membrane
cell wall
14
Sugar is composed of C, H, and O. Sugar is an example of which of the following?
an atom
an electron
a mixture
a compound
15
10% of shoes made are randomly chosen to see if they are made right, this is?
research and devlopment
quality control
product selection
product distribution
16
What best explains why the comet travels more quickly when it is closer to the Sun?
The frictional force on the comet increases
The temperature of the comet increases
The mass of the comet increases
The gravitational pull on the comet increases
17
The dotted line is a wall that will be removed. A ceiling beams needs to be added because?
the wall provides isulation
the wall provides a place to hang thing on
the wall provides structural support
the wall provides a sound barrier between rooms
18
Which best describes the function of an encoder in a telephone communication system?
changing electrical impulses into sound
converting sound to electrical impulses
sending electrical signals through a circuit
receiving transmitted electrical signals
19
The complete removal of decomposers from an ecosystem would effect what the most?
the distribution of organisms
the availability of water
the spread of disease
the recycling of materials
20
These can both be found in aquatic environments, what do they both have in common?
they contain blood
they are both producers of food
they contain nerves
they are both composed of cells
21
Below shows 2 dogs that have different coat colors, where are the instructions for coat color?
cytoplasm of skin cells
mitochondria of hair cells
chromosomes of every cell
membrane of every cell
22
Which of the following causes a ship's anchor to sink to the ocean floor?
Chemical forces
gravity
magnetism
nuclear forces
23
Based on the graph, which bicyclist traveled at a constant speed during the entire ride?
bicyclist T
bicyclist U
bicyclist R
bicyclist S
24
Which phase of the moon shows what it would look like during a solar eclipse?
full moon
first quarter
last quarter
new moon
25
The picture shows a paramecium. In which kingdom is the paramecium classified?
Animalia
Plantae
. Fungi
Protista
26
In the chemical reaction shown below, what statement is true?
The mass of the products equals the mass of the reactants.
The hydrogen gas will have a mass of zero.
The zinc chloride will have less mass than the zinc.
The mass of the products is less than the reactants
27
Which organelle is present in animal/plant cells, and helps make energy available to the cell
Vesicles
Mitochondria
Golgi Apparatus
Nucleus
28
Which point represents the substance in the state where the particles move the least
Z
X
Y
W
29
Which of the following tools would give the most precise measurement of 15 milliliters of H
2
O?
a 50 mL beaker
a 500 mL beaker
a 500 mL graduated cylinder
a 50 mL graduated cylinder
30
If block A is on the Moon, and block B is on Earth, what property do they share?
volume
mass
weight
surface area
31
The mass of the ice is measured to be 100g, after two hours the mass will likely be?
less
the same
can't be determined
more
32
What are the layers of the Earth in order of most to least dense, based on the diagram?
crust, mantle, outer core
outer core, mantle, crust
crust, mantle, inner core
inner core, mantle, crust
33
What is one advantage to building custom cabinets?
they are cheaper
they are easy to replace
they can be built faster
they are higher quality
34
Which of the following can be determined using the information shown in the diagram?
the car’s average speed between the two points
the car’s mass as it moves away from the start
the car’s total acceleration within the first meter
the car’s position after the first two seconds
35
Based on the diagram, which season is occurring in the Southern Hemisphere of Earth?
Winter
Fall
Spring
Summer
36
Which list shows the size among galaxies, stars, and the universe from smallest to largest?
universe, galaxy, stars
galaxy, stars, universe
stars, galaxy, universe
stars, universe, galaxy
37
Which of the following do you need to show advertisements to people around the world?
software to search for images
printing to create the images
networks to transmit signals
systems to locate viewers
38
A cold can is placed outdoors on a warm day, moisture appears on the can. Why did this happen?
Water vapor absorbs heat from the can and turns liquid.
The warm air causes heat to flow out of the can and condense
Water vapor in the air condenses into a liquid on the can
The warm air absorbs cold from the can and turns to a liquid
39
The presence of which geological feature best proves that glaciers once covered an area?
groundwater springs
U shaped valleys
underground caves
wide river beds
40
Which of the following statements is supported by the similarities between the embryos?
the turtle is more advanced than the chicken
the turtle and the chicken are similar as adults
the chicken and the turtle share a common ancestor
the chicken has more offspring than the turtle
41
Anya is observing an organism in the lab. The organism likely belongs to what kingdom?
Plantae
Eubacteria
Fungi
Animalia
42
If all the trees were cut down, the energy supply of what would be most directly affected?
mountain lion
rabbit
grasshopper
aphid
43
Which of the following most likely causes Earth’s inner core to be a solid?
The pressure at the core is very high.
The metals in the core are very heavy.
The chemicals in the core are very reactive
The temperature of the core is very low
44
Which of the following has changed over the last 200 years primarily due to human activity?
Earth’s magnetic field
the composition of the atmosphere
Earth’s tectonic plate activity
the frequency of earthquakes
45
Which of the following tools is most useful for tightening small mechanical fasteners?
Saw
Pliers
Chisel
Sander
46
Which of the following is the best estimate for the number of stars in a typical galaxy?
hundreds
thousands
tens
billions
47
Which process was most likely responsible for the change in the pond?
sediment deposition
chemical weathering
evaporation
freezing
48
Which of the following statements best explains why some of the offspring have white flowers?
The offspring inherited DNA sequences from each parent plant
These offspring were created by asexual reproduction
The offspring inherited DNA sequences from one parent plant
These offspring were produced in a dark environment
49
The drawing shows the organization from simple to complex, which number represents a tissue?
3
1
4
2
50
When a person’s sweat evaporates, the person feels cooler. Why does sweating make you cool?
The temperature of the water goes down when it evaporates
Heat is absorbed by the body when sweat evaporates
The water in the body gets cooler
Heat is absorbed by sweat when it evaporates
51
Which observation best supports the conclusion that 2 species evolved from a common ancestor?
The species both obtain oxygen from the air
The species have similar bone structure
The species live in the same environment
The species are both herbivores
52
Human activity most likely contributes to which of the following changes on Earth?
a decrease in the number of volcanic eruptions
a decrease in the magnitude of large earthquakes
an increase in the amount of atmospheric carbon dioxide
an increase in the length of a day
53
You lose power during a storm and call the company to report it. What does that represent?
designing a process
generating output
setting a goal
giving feedback
54
If a new organism is discovered, how would it most likely be classified in a given kingdom?
Organism's habitat
Color of organism
Structure of anatomy
Location where it was found
55
Bedrock in Massachusetts is often scraped and polished, what caused this?
volcanic eruptions
frequent earthquakes
glacial movement
crustal deformation
56
Which of the following best describes the physical feature represented by this contour map?
a valley with two gently sloping sides
a series of rivers flowing in concentric circles
a hill with slopes that varying steepness
a flood plain with creeks and streams
57
Which of the following is produced when two or more elements combine in a chemical reaction?
atom
solution
compound
mixture
58
Which of the following organisms produce energy from the sunlight?
worm
hawk
rabbit
grass
59
Which of the following statements best describes photosynthesis?
Carbon dioxide and water are turned into sugar and oxygen
Oxygen and carbon dioxide are turned into water and sugar
Sugar and oxygen are turned into water and carbon dioxide
Water and sugar are turned into oxygen and carbon dioxide
60
What material would be the best to construct the shell part of the nightlight?
plastic
metal
wood
rubber
