Chapte8 lesson 1

_____________is a blanket

of gases that surrounds Earth.

• troposphere

• atmosphere

• air pressure

• barometer

_______________ is a molecule containing three atoms of oxygen.

• exosphere

• mesosphere

• troposphere

• ozone

The ____________ lies above the troposphere

• stratosphere

• troposphere

• mesosphere

• exosphere

A substance or material that is harmful to the ecosystem or living things is called ________________

• barometer

• air pressure

• pollutant

• ozone layer

The weight of the upper layers of air presses down on the lower layers. The air exerts a downward farce that we call __________

• mesosphere

• ozone layer

• barometer

• air pressure

Changes in air pressure from day to day are measured using an instrument called

• air pressure

• barometer

• pollutant

• exosphere

Layers of the atmosphere

(from closest to the ground and up)

• troposphere, stratosphere, thermosphere, mesosphere, exosphere

• troposphere, stratosphere, mesosphere, thermosphere, exosphere

• troposphere, mesosphere, stratosphere, thermosphere, exosphere

• troposphere, thermosphere,

  stratosphere, mesosphere, exosphere

Contains particle of ions

• mesosphere

• stratosphere

• thermosphere

• exosphere

Where satellites orbit Earth here

• exosphere

• troposphere

• mesosphere

• stratosphere