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Air and Flight
Grade 5 Science Glossary - Unit 4 Test
Question | Answer |
---|---|
Aerodynamics | the study of air in motion |
Bernoulli's Principle | states that the faster a fluid or gas travels, the lower its pressure; named for Swiss mathematician Daniel Bernoulli |
Compress | to squeeze or squash |
Database | a computer program that stores information and allows you to retrieve information as you need it |
Drag | a force that slows down or prevents the motion of objects in air or water |
Fair Test | an investigation carried out under controlled conditions. In a fair test, all variables are controlled except the one under investigation |
Fuselage | the body of an aircraft that holds passengers or cargo |
Gravity | a force that attracts all objects on Earth toward the ground; results from masses being attracted to other masses |
Hovercraft | a vehicle that travels on a cushion of air over land or water |
Insulate | to prevent heat loss |
Lift | a force that causes something to rise |
Payload | the load carried by an aircraft or spacecraft |
Pitch | the up-and-down movement of the nose of a plane |
Pressure | the force exerted by one thing on another |
Propel | drive or push an object forward |
Roll | a motion where one wing tip moves up while the other wing tip moves down |
Struts | supporting bars or braces |
Tether Lines | the pieces of string or rope used to hold a balloon until ready to take off |
Thrust | the force exerted by a rocket or jet engine that moves something forward |
Variable | anything in an investigation that can be changed |
Yaw | the side-to-side movement of the nose of a plane |