Mark is a graduate student who is studying identity formation. he interviews a group of 5-year-olds, a group of 10-year-olds, and a group of 15-year-olds, and asks them what they plan to be when they finish school. in this example, mark is using a research design.

cross-sectional

Explanation:

Cross-sectional research design: This is one of the types of research design or study in which participant's having different ages are being compared at the same point in time. This research study is often used in developmental psychology and is a type of descriptive study.

Example: A study looking at the prevalence of lung cancer in a given population.

Advantage:

1. Cost-effective.

2. Data gathering is easy as compared to a longitudinal study.

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 : -