WorksheetsHydrothermal Vents
Total questions: 20
Worksheet time: 10mins
When were hydrothermal vents discovered?
1976
1977
1967
1981
Black smoke from hydrothermal vents is due to the presence of these elements...
calcium carbonate.
iron, copper, and zinc.
barium and oxygen.
silicon and calcium.
What are some organisms found near hydrothermal vents?
dolphins and whales
lemon sharks and Christmas tree worms
serpulid worms, tubeworms, and mussels
What is the main process used to harness energy for organisms around hydrothermal vents?
Chemosynthesis
Photosynthesis
Where are hydrothermal vents are found mostly around...
mid-ocean ridges and seamounts.
continental shelf.
guyots and abyssal plain.
middle of the ocean.
Hydrothermal vents were first discovered at the...
Hawaiian Islands.
Atlantic Mid-Oceanic Ridge in the Atlantic Ocean.
Mariana Trench.
Galapagos Spreading Center in the Pacific Ocean.
How do organisms get their energy in the deep sea around hydrothermal vents? (Name the process, organisms involved, and the name of the chemical compound)
sun, bacteria, hydrogen sulfide
chemosynthesis, mutualism, chlorine
chemosynthesis, bacteria, hydrogen sulfide
photosynthesis, bacteria, hydroxide
Chemosynthetic bacteria can form a symbiotic relationship with
hydrothermal vent
algae
giant tube worms and giant clams
the vent fluid
How cold is the seawater that seeps down through the cracks of the ocean floor ?
10 degrees Celsius
8 degrees Celsius
2 degrees Celsius
20 degrees Celsius
What kind of minerals can be found in the chimney of a hydrothermal vent?
magnesium , calcium, iron
copper, zinc and iron
barium, calcium, silicon
iron sulfide
I live in the outer boundary of the hydrothermal vent . I prefer temps of 2 degrees Celsius. I am whitish orange with big elephant ears on the side . I have a powerful beak and am a top predator. What animal am I ?
clam
tubeworm
mussel
octopus
Hot liquids are less dense and therefore more buoyant than cold liquids
True
False
I live around hydrothermal vents along the Mid-Ocean Ridge in the Eastern Pacific Ocean. I can grow up to two meters long and ten centimeters in diameter. I am made of a hard material called chitin, which protects me from the toxic vent chemicals and from predators such as crabs and fish. I do not eat because I don't have a mouth nor a stomach. Instead, billions of symbiotic bacteria living inside me produce sugars from carbon dioxide, hydrogen sulfide, and oxygen. I use some of these sugars as food. What animal am I
mussel
squat lobster
Tubeworm
anemone
I live in and around vents Preferred temperature: up to 15° C Description: up to 30-60 mm; pale white Food: scavenge on limpets, polychaetes, bacteria and other dead animals Facts: blind; fierce predators as well as scavengers
Scientific name: Munidopsis sp
What animal am I ?
squat lobster
tubeworm
spaghetti worm
microbes
I live on rocks, in and around vents, inside animals (Pacific: inside tubeworms, mussels, clams; Atlantic: inside mussels and clams) Preferred temperature: 2-120° C Description: various shapes: ball and rod shaped, 2-5 micrometers; filamentous mats, 100-200+ micrometers Food: hydrogen sulfide; I am the base of food chain; carry out chemosynthesis; free-living or symbiotic
clams
bacteria/microbes
zoarcid fish
octopus
These two-foot long white fish are top predators around vents. They eat everything from tubeworms to shrimp. Despite their huge appetites, these fish are slow and lethargic. They spend a lot of time floating around clumps of tube worms and mussels
shrimp
tubeworm
zoarcid
clams
Where do the hot water and chemicals for hydrothermal vent ecosystems come from?
fractures in the oceanic crust where water meets magma
the shelf break
hot waste water from nuclear plants
climate change
Large tube worms over six feet long are one of the most visible animals at the vents. These tube worms, secrete a thick paper-like white tube along their body. The worm does not have a mouth or gut instead they rely on bacteria living in their tissues to produce the 'cell food' needed to keep them alive. It is believed these worms are some of the fastest growing invertebrates known. Name the type of symbiotic relationship between the bacteria and tubeworm
parasitic
commensalism
mutualistic
What gives the hydrothermal fluid the appearance of smoke
The fluid carries dissolved bacteria from deep beneath the ocean floor. When the fluid mixes with sea water, these bacteria combine with sulfur to form tiny black particles. These particles make the fluid look like smoke.
The fluid carries dissolved metals from deep beneath the ocean floor. When the fluid mixes with sea water, these metals combine with sulfur to form tiny black particles. These particles make the fluid look like smoke.
The fluid carries dissolved from animal debris deep beneath the ocean floor. When the fluid mixes with sea water, the debris combine with sulfur to form tiny black particles. These particles make the fluid look like smoke.
Which has a hotter temperature, the white smoker or the black smoker ?
white smoker
black smoker
neither
