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Worksheets2024 8th science final
Total questions: 60
Worksheet time: 45mins
Who made the first atomic theory?
John Dalton
Niels Bohr
J.J. Thompson
Democritus
Where are the inner transition metals located?
Left
Very bottom
Right
Middle
How are elements arranged on the periodic table?
By increasing the atomic mass
By decreasing atomic mass
By increasing atomic number
By decreasing atomic number
What is the most important thing in an animal cell?
Nucleus
Lysosome
Ribosome
Nucleolus
Which one has a chloroplast?
Animal cell
Plant cell
What is amplitude?
The waves length
The waves height from the rest position
The bottom of a wave
The top of the wave
What is the trough?
The bottom of the wave
The top of the wave
The wave length
The waves frequency
What is a wave?
A disturbance that moves energy from one place to another
A measurement of the amount of energy transferred by a wave
The distance between the crest of the wave
The measurement of the number of times it has repeated
What is frequency?
The bottom of the wave
The number of waves that pass a given point in a set period of time.
The top of the wave
The distance between the crest of the wave
What color is a warm front usually?
orange
green
blue
red
What colors are a stationary front?
Blue and red
Green and red
Blue and orange
Brown and Blue
What biome is the Pacific Ocean?
tundra
desert
Marine
exotic
What's the main ecosystem in central and southern Missouri?
temperate deciduous forest
tropical rainforest
the taiga
temperate rainforest
What is ecology?
The place where we live
The ocean
the study of organisms and how they interact with the environment around them
an area classified according to the species that live in that location
When were wolves reintroduced in Yellowstone?
a) 1995
b) 2006
c) 1982
d) 1997
What is nitrogen?
a) A nonmetallic element that makes up about 78 percent of the atmosphere by volume occurring as a colorless odorless gas
b) An element that takes the solid form of either graphite or diamond
c) A nonmetallic element that is found in the blood, muscles, nerves, bones, and teeth
d) A colorless, odorless, tasteless gas essential to living organisms
What is oxygen?
An element that takes the solid form of either graphite or diamond.
A colorless, odorless, tasteless gas essential to living organisms.
A nonmetallic element that is found in the blood, muscles, nerves, bones, and teeth.
A nonmetallic element that makes up about 78 percent of the atmosphere by volume occurring as a colorless odorless gas.
What is phosphorus?
A colorless, odorless, tasteless gas essential to living organisms.
An element that takes the solid form of either graphite or diamond.
An element that is found in the blood, muscles, nerves, bones, and teeth.
A nonmetallic element that makes up about 78 percent of the atmosphere by volume occurring as a colorless odorless gas.
What is H2O?
A nonmetallic element that makes up about 78 percent of the atmosphere by volume occurring as a colorless odorless gas.
The chemical symbol for water.
A colorless, odorless, tasteless gas essential to living organisms.
An element that takes the solid form of either graphite or diamond.
How do living things adapt to their environment?
Natural selection.
Living somewhere a long time.
By making an effort to change their traits.
Eat prey.
Where do plants get their energy from?
Water
Soil
The sun
Leaves
What is a food web?
A complex network of interconnecting and overlapping food chains showing feeding relationships within a community
A circle of animals eating other animals
A linear sequence of organisms through which nutrients and energy pass as one organism eats another
A line of animals eating each other
What is a food chain?
A line of animals eating each other
A complex network of interconnecting and overlapping food chains showing feeding relationships within a community
A circle of animals eating each other
A linear sequence of organisms through which nutrients and energy pass as one organism eats another
What's an igneous rock?
Formed from pre-existing rocks or pieces of once-living organisms
Formed by earthquakes
Formed by mountains
Formed by the cooling and solidification of a melted rock
Which is NOT the result of plate tectonics?
Causes volcanic eruptions
Cause earthquakes
Causes hurricanes
Causes sea-floor spreading
What is the center of the earth called?
Plates
Center
Crust
Core
What is the first element on the periodic table?
Helium
Hydrogen
Alkali Metals
Transition Metals
What is the first group/family on the periodic table?
Alkali Metals
Alkaline Earth Metals
Transition Metals
Hydrogen
What is the powerhouse of the cell?
Mitochondria
Nucleus
Nucleolus
Chloroplast
What organelle gives plants their color?
Ribosomes
Chloroplast
Cytoplasm
Nucleus
What is the outermost layer of a plant or fungus cell?
Cytoplasm
ER
Cell Wall
Ribosomes
What is inside of the nucleus?
Nothing
Nucleolus
ER
Smooth ER
What is the cell's control center?
Nucleus
Ribosomes
Cell membrane
Cell Wall
What is the highest point of a wave called?
Crest
Trough
Amplitude
Wavelength
What is the lowest point of a wave called?
Crest
Trough
Amplitude
Wavelength
What is the height of a wave called?
Crest
Trough
Amplitude
Wavelength
What is it called from one crest to another crest or from one trough to another trough?
Crest
Trough
Amplitude
Wavelength
The more waves, the higher (a) .
What is inside of the nucleus?
Nothing
DNA
ER
Smooth ER
What type of front brings violent, stormy weather?
Stationary Front
Cold Front
Warm Front
Occluded Front
What is the effect of low pressure?
Clouds Form
It snows every time
The sun comes out
Tornadoes form
What is the effect of high pressure?
Light winds start
It snows every time
Clear skies
Tornadoes form
What biome is Missouri in?
Tundra
Savanna
Deciduous Forest
Tropical Rainforest
Where are tropical rainforests located?
Near the equator
In Antarctica
Only in Europe
The U.S.
What are biotic factors?
Non-living things
Living Organisms
A human
A frog
What are abiotic factors?
Non-living things
Living Organisms
A human
A frog
Decomposition is part of the carbon cycle.
True
False
Only on Tuesday
I don't know
Weathering and erosion takes part in the phosphorus cycle.
Yes
No
Not in Asia
I don't know
The sun plays a factor in the water cycle.
Yes
No
At night
I don't know
What do secondary consumers eat?
Primary consumers
Producers
Apex Predators
Other secondary consumers
What do primary consumers eat?
Apex Predators
Producers
Secondary Consumers
Other primary consumers
What do producers eat?
Other producers
Apex Predators
They don't eat anything because they make their own food
Primary consumers
What is the name of the ultimate consumer in a food web?
Primary consumer
Apex Predator
Secondary Consumer
Producer
Weathering is one of the main steps in the rock cycle.
False
No
True
Sometimes
Weathering and Erosion are the same thing.
False
True
Which one of these rocks is NOT one of the three main rocks in the rock cycle?
Sedimentary
Metamorphic
Igneous
Mineral
Who was the first contributor to the atomic theory that described the atom as "indivisible"?
John Dalton
Ernest Rutherford
JJ Thompson
Democritus
Neils Bohr
What particles are found in the nucleus of an atom?
Protons and Electrons
Neutrons and Electrons
Protons and Neutrons
Electrons only
What is the charge of an electron?
Positive
Negative
Neutral
Variable
What is the atomic number of this atom?
2
4
6
none of the above
