What is a space elevator?
A space elevator is a proposed machine to reach outer space. The elevator consists of a long cable attached to the ground and the other end of the cable attached to a counterweight located above the atmosphere.
What is a counterweight?
A counterweight is a mass used to balance or cancel out other forces or actions.
What is the atmosphere?
The atmosphere is the layer of mainly gases that surround the solid Earth and waters.
What are the layers of Earth’s atmosphere?
The four main layers of Earth’s atmosphere are the troposphere, stratosphere, mesosphere, and the thermosphere.
What is in air?
Air is a mixture of gases consisting of about 78% nitrogen, 21% oxygen, and 1% other gases and particulates.
What is the ozone layer?
The ozone layer is a region about 20 – 30 kilometers above Earth’s surface that has a relatively high concentration of the gas, ozone. Ozone is a molecule consisting of three atoms of oxygen bound together.
What is pressure?
Pressure is defined as the force per unit area.
What is air pressure?
Air pressure is caused by gravity pulling air particles downward toward the surface of Earth.
What is temperature?
Temperature is the average kinetic energy of the particles of a substance. Particles at a higher temperature move more vigorously and randomly than particles at a lower temperature. This greater movement at higher temperature increases the distance between adjoining particles of the substance.
What is density?
Density is the compactness of a material. A dense object occupies a smaller volume than a less dense object with the same mass.
What is weather?
Weather describes the current state of Earth’s atmosphere. Some factors used to describe the condition of the atmosphere are temperature, air pressure, humidity, cloud cover, and wind.
What is rotation?
Rotation is the circular movement of an object around a central internal axis.
What is the equator?
The equator is an imaginary line that equally separates the Northern and Southern hemisphere of Earth.
What is a cloud?
A cloud is a mass of small droplets of liquid water or ice crystals that is suspended in the air above Earth’s surface.
What is velocity?
Velocity is the speed of an object in a given direction.
What is angular velocity?
Angular velocity is the rate at which an object rotates on its axis.
What is tangential velocity?
Tangential velocity is the linear speed of an object traveling in a circular path.
What is acceleration?
Acceleration is the rate at which the velocity of an object is changing.
What is angular acceleration?
Angular acceleration is the rate at which the angular velocity of an object is changing.
What is centripetal force?
The centripetal force is the force that causes an object to travel in a circular or curved path.
What is gravity?
Gravity is the attractive force between two or more masses.
Here are some definitions to help you with your Grade 3 – 5 Lesson 1 investigation.
Space Elevator – a proposed machine to reach outer space. The elevator consists of a long cable attached to the ground and the other end of the cable attached to a counterweight located above the atmosphere
Counterweight – a mass used to balance or cancel out other forces or actions
Atmosphere – the layer of mainly gases that surround the solid Earth and waters
Layers of Earth’s Atmosphere – the four main layers of Earth’s atmosphere are the troposphere, stratosphere, mesosphere, and the thermosphere
Air – a mixture of gases consisting of about 78% nitrogen, 21% oxygen, and 1% other gases and particulates
Pressure – the force per unit area
Air pressure – the force per unit area caused by gravity pulling air particles downward toward the surface of Earth
Temperature – the average kinetic energy (motion) of the particles of a substance
Weather – the current state of Earth’s atmosphere
Rotation – the circular movement of an object around a central internal axis
Equator – an imaginary line that equally separates the Northern and Southern hemisphere of Earth
Here are some definitions to help you with your Grade 3 – 5 Lesson 2 investigation.
Atmosphere – the layer of mainly gases that surround the solid Earth and waters
Layers of Earth’s Atmosphere – the four main layers of Earth’s atmosphere are the troposphere, stratosphere, mesosphere, and the thermosphere
Air – a mixture of gases consisting of about 78% nitrogen, 21% oxygen, and 1% other gases and particulates
Pressure – the force per unit area
Air pressure – the force per unit area caused by gravity pulling air particles downward toward the surface of Earth
Temperature – the average kinetic energy (motion) of the particles of a substance
Density – the compactness of a material
Weather – the current state of Earth’s atmosphere
Cloud – a mass of small droplets of liquid water or ice crystals that is suspended in the air above Earth’s surface
In this module you’ll take a space elevator through Earth’s atmosphere to study characteristics of each layer. You’ll also investigate how the movement of air creates weather features. Get started now investigating Earth’s atmosphere using the latest method of traveling to space.
