What is the process of planet formation?

Two processes are important in planet formation. Condensation is the production of solid dust grains as gases in the molecular cloud cool, and accretion is the collision of the dust grains to form clumps and progressively larger bodies, some of which grow into planets (Figure 10.2).

What is the earliest stage of planet formation?

Summary: Researchers have dated the earliest step in the formation of the solar system — when microscopic interstellar dust coalesced into mountain-sized chunks of rock — to 4,568 million years ago, within a range of about 2,080,000 years.

Which of the following is the correct sequence of events in mitosis?

Mitosis has four sequential stages: prophase, metaphase, anaphase, and telophase.

What are the five steps of planet formation?

After becoming distinct planets, they went through four stages of formation: Differentiation, Cratering, Flooding and Surface Evolution. For Earth, these changes led to the planet we know today, layered with an iron core, a weathered, shifting surface, water and life.

What is Earth’s classification?

The Terrestrial Planets. From top: Mercury, Venus, Earth and Mars. The planets Mercury, Venus, Earth, and Mars, are called terrestrial because they have a compact, rocky surface like Earth’s terra firma. The terrestrial planets are the four innermost planets in the solar system.

Which is the correct order of the steps of mitosis?

Which of the following options shows the correct order of the steps of mitosis? prophase, prometaphase, metaphase, anaphase, telophase, and cytokinesis. metaphase, prometaphase, prophase, anaphase, telophase, and cytokinesis. prophase, prometaphase, metaphase, telophase, anaphase, and cytokinesis. Answer a is correct.

When does mitosis occur in the human body?

The great majority of the cell divisions that happen in your body involve mitosis. During development and growth, mitosis populates an organism’s body with cells, and throughout an organism’s life, it replaces old, worn-out cells with new ones.

When does a cell go through interphase before mitosis?

Interphase. Before a dividing cell enters mitosis, it undergoes a period of growth called interphase. Some 90 percent of a cell’s time in the normal cellular cycle may be spent in interphase. G1 phase: The period prior to the synthesis of DNA. In this phase, the cell increases in mass in preparation for cell division.

When does the mitotic spindle begin to form?

In early prophase, the cell starts to break down some structures and build others up, setting the stage for division of the chromosomes. The chromosomes start to condense (making them easier to pull apart later on). The mitotic spindle begins to form.