After work, you drive home to find that your toddler is pushing the garage door opener so that the garage door opens and then shuts. at first you were a little unhappy that she was doing this, but you remembered your training in development and realized that your daughter was engaged in what piaget referred to as

The correct answer is tertiary circular reactions. The tertiary circular reactions often occur between the age of 12-18 months old by which the child is likely to engage to overt trial and error to problem solving, the child Is likely to adapt purposefully in order to establish schemes in specific situations and lastly, the child engages to experimental quality in his or her behavior.

uses : -

1.aneroid barometers primarily measure whether pressure is rising or falling.

2.aneroid barometers are often used for reading pressure in homes and recreational boats.  

3.other uses may include barographs in meteorology and altimeters in modern aircraft.  

4.this type of barometer can announce whether a high or low pressure system is coming or whether it is becoming more intense.  

5.there are different types of aneroid barometers, such as the altimeter, which measures altitude, or distance above sea level.  

6.another example is a barograph, which is a modified aneroid barometer that provides constant readings of atmospheric pressure on graph paper.  

7.when used in this capacity, the aneroid barometer can store a week's worth of data.

android diameter a device for measuring atmospheric pressure , often specially calibrated for use as an altimeter ,consisting of a box or chamber partially exhaused of air, having an elastic top and a pointer to indicate the degree of compression of the top caused by the external air

refer to the attachment for the characteristics : -