Unit 1 Study Guide--8th Grade Science

Which of the listed object(s) formed LAST in our solar system?

• solar nebulas

• inner planets

• planetesemals

• the Sun

According to the big bang theory, which statement is accurate about how the universe came to be?

• Atoms such as hydrogen were destroyed.

• Stars and galaxies formed.

• It gradually warmed.

• It expanded slowly.

Which statement accurately describes the inner planets?

• Uranus is one of the inner planets.

• The inner planets formed when the solar system cooled.

• The inner planets are also called terrestrial planets.

• The inner planets are larger than the outer planets.

A student came late to class and started her notes midway through the lecture. These are the notes she copied:

–Small, rocky object

–Not round, irregular shapes

–Several meters to kilometers

–Make up a belt between Mars and Jupiter

What should she title her notes?

• Comets

• Asteroids

• Meteors

• Meteoroids

Jeremy is late to science class and misses the very beginning of notes for the day. These are Jeremy's notes:

–Round objects that orbit the Sun

–Not large enough to have enough gravitational pull to clear the path of their orbit

–4 known in the Kuiper Belt (Eris, Haumea, Makemake, and Pluto)

–1 in the asteroid belt (Ceres)

Jeremy later copied the title of the notes from a friend. What title did Jeremy most likely copy?

• Comets

• The Kuiper Belt

• Asteroids

• Dwarf Planets

Which two scientists’ theories supported the general consensus of the people and religious teachings of the time?

• Aristotle and Ptolemy

• Ptolemy and Copernicus

• Aristarchus and Aristotle

• Galileo and Aristarchus

Which statement best describes the primary difference between scientific investigation and technological design?

• Scientific investigation is more time consuming than technological design.

• Technological design is more expensive than scientific investigation.

• Technological design involves background research, and scientific investigation does not require research.

• Scientific investigation involves experiments, and technological design involves products.

In which layer of the sun do sunspots occur?

• Core

• Corona

• Photosphere

• Convection Zone

What can be observed only by observing its effects on gravity?

• solar nebula

• gas and dust

• planetesemals

• dark matter

What will a medium-mass star become at the very end of its life cycle?

• a red giant

• a black hole

• a white dwarf

• a neutron star