Water You Doing Back Then?
Which early explorers used stars, waves, winds, and observations of wildlife to navigate long distances across the Pacific Ocean?
Polynesians
This early underwater device trapped a pocket of air, allowing people to remain below the surface and perform tasks such as underwater construction.
Diving bell
This underwater vehicle is controlled by a person and remains connected to a ship by a cable.
ROV — Remotely Operated Vehicle
A scientist who studies living organisms in saltwater environments and their relationships with the environment has this career.
Marine biologist
TRUE or FALSE: Science can determine whether the Mona Lisa is beautiful.
False — beauty is subjective and cannot be objectively tested using scientific evidence.
Early Chinese sailors improved ocean navigation with this tool that allowed them to determine direction even when landmarks were not visible.
Magnetic compass
Jacques Cousteau and Émile Gagnan developed this device that allowed divers to breathe underwater without being connected to the surface.
Aqualung / SCUBA / Demand regulator
This underwater vehicle can be programmed to complete a mission without being continuously controlled from a surface ship.
AUV — Autonomous Underwater Vehicle
A scientist studies fish populations, migration, habitat, and the effects of fishing. What career best fits this work?
Fisheries biologist
A pool noodle floats while a dense reef rock sinks. The upward force exerted by the water on both objects is called this.
Buoyant force
Sailors could determine latitude using the Sun and stars, but determining this east-west position was much more difficult.
Longitude
William Beebe and Otis Barton descended into the ocean inside this spherical vessel, but it remained connected to a surface ship by a cable.
Bathysphere
Scientists need to explore a dangerous shipwreck and want to see live video while controlling exactly where the vehicle goes. Choose ROV or AUV
ROV
This federal agency studies the oceans and atmosphere and is responsible for areas such as weather forecasting, fisheries, ocean research, and coastal resources.
NOAA — National Oceanic and Atmospheric Administration
According to Archimedes' Principle, the buoyant force acting on an object equals the ________ of the fluid displaced by the object.
Weight
John Harrison helped solve the longitude problem by developing an extremely accurate version of this timekeeping device.
Marine chronometer
J.B.S. Haldane developed decompression tables to help divers avoid this dangerous condition caused when dissolved nitrogen forms bubbles in the body during a rapid ascent.
Decompression sickness / the bends
Scientists want to map a huge area of seafloor without continuously steering the vehicle. Choose ROV or AUV
AUV
You want a career managing Texas fish populations, wildlife habitats, state parks, or aquatic resources. Which state agency would be a likely employer?
Texas Parks and Wildlife Department (TPWD)
What do submarines fill with water to decrease buoyancy and dive?
Ballast tanks
Which expedition is credited with discovering thousands of new marine species and helping establish oceanography as a modern science?
HMS Challenger
Which scientist used knowledge of gases and pressure to create safer diving decompression tables?
J.B.S. Haldane
Scientists need an untethered vehicle to repeatedly survey a large section of seafloor. Which technology should they use?
AUV
Which career would study the physical properties and movement of ocean water, including currents, waves, and temperature?
oceanographer
A ship is floating at rest. How does its buoyant force compare to the weight of the ship?
They are equal