Examlex
What is the solar wind?
Piaget
A Swiss psychologist known for his pioneering work in child development, especially his theory of cognitive development that describes how children construct a mental model of the world.
Adolescence
A developmental stage between childhood and adulthood characterized by physical, psychological, and social changes.
Industrialized Societies
Societies characterized by a high level of industrialization, urbanization, and reliance on mechanized forms of production and services.
Previous Centuries
Refers to the time periods, each spanning a hundred years, that have occurred before the current century.
Q4: If the distance between us and a
Q8: Describe some ways in which a meteorite
Q15: Which of the following statements about comets
Q23: Which of the following is a consequence
Q33: Comet nuclei can be darker than charcoal.
Q63: The combined mass of all the asteroids
Q67: Which of the following terms is given
Q74: A planet's size can be determined by
Q101: How do human-built nuclear power plants on
Q106: Process of Science: Why do we think