Continue with Microsoft TeamsRead About Aircraft with Motors
Vocabulary
Read the vocabulary terms to understand the reading better.
Amphibious means to be able to live or be used on both land or water.
Lift is the force that acts against the plane’s weight and holds it in the air.
Thrust is the power or force that overcomes drag and weight to move an object forward.
Propellors are devices that have 2 or more metal blades, that spin at high speed to cause an aircraft or boat to move.
The rotor is a device on top of a helicopter that has blades coming out of a central point; it is rotated, or turned, quickly to produce thrust to lift and move a helicopter.
Radar is a system that sends out radio waves, which bounce off far-away objects, then bounce back; the time the radio wave takes to return shows the location of the object.
Stealth aircraft are aircraft that uses a variety of technologies to make it very difficult to detect, or spot, with radar.
Military aircraft are aircraft used by the armed forces (e.g., army, navy, air force).
Amphibious Aircraft
Aircraft that can land and take off either on land or water are amphibious. Some have skis so they can also land on snow or ice. Amphibious aircraft are especially useful in remote areas where they can land on runways, lakes, or rivers.
Helicopters
Helicopters get lift and thrust from the propellers—a rotor on the top. This rotor allows helicopters to take off and land vertically. It also lets the helicopter hover, and fly forward, backward, and sideways. Helicopters are often used in areas where there is no room for an airplane runway.
Stealth Planes
Stealth aircraft are military aircraft. These planes use advanced technology to avoid being detected by radar. Stealth planes have features that interfere with radar. These features make the plane difficult to see, hear or detect with hi-tech equipment. However, these aircraft can be detected when they use their weapons. Stealth planes can have human pilots. They can also be flown by remote control.
Now Show What You Know!
Complete some questions about the reading selection by clicking “Begin Questions” below.
