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WorksheetsUnit 2 Test Review
Total questions: 23
Worksheet time: 12mins
How do scientists believe gravity influenced the formation of the planets in our solar system?
A large cloud of gas and dust ignited into a planet.
Gravity pulled the planets out of the Sun.
A large explosion created the planets.
Large pieces of debris clumped together to form planets.
What are the steps of the Nebular Theory?
Step 1: A tiny point rapidly expanded
Step 2: Helium was compressed into stars
Step 3: The stars explode and turn into planets
Step 1: Gravity pulled together atoms in a nebula
Step 2: Nuclear fusion occurred and a star is born
Step 3: Smaller clumps around the star formed into planets
Step 1: The solar system formed because of the Big Bang
Step 2: Our solar system was the first one
Step 3: Dark energy is pushing other solar systems away
Step 1: Gaseous planets will orbit the Sun slower
Step 2: Rocky planets will orbit the Sun faster
Step 3: The Sun will vaporize all the inner planets
The ____ are the four planets closest to the Sun
outer planets
gas giants
inner planets
larger
The outer planets are ____ than the inner planets,
smallest
larger
slower
rocky
The outer planets are also called ________.
terrestrial planets
larger planets
gas giants
farthest planets
The four inner planets are:
Jupiter, Saturn, Uranus and Neptune
Mercury, Venus, Earth and Pluto
Mercury, Venus, Earth and Mars
Jupiter, Saturn, Neptune and Pluto
The four outer planets are:
Jupiter, Saturn, Uranus and Neptune
Mercury, Venus, Earth and Pluto
Mercury, Venus, Earth and Mars
Jupiter, Saturn, Neptune and Pluto
The ______ do not have solid surfaces and have a small, rocky core.
outer planets
terrestrial planets
inner planets
smallest
The outer planets are made of _____.
rock and ice
rock and metals
gas
ice
What is the big bang theory?
A theory that states that the universe started in a large mass and then imploded to form everything.
A theory that states that the universe was there, will be and is there. Is homogeneous and isotropic.
A theory that states that the universe is slowly coming back to a center.
A theory that states that the universe started in a small mass and then expanded, the expansion cooled down the temperature and that resulted in the formation of matter, energy, space and time.
A cloud of gas and dust in space is called __________.
a nebula
a space haze
an asteroid belt
a galaxy
The Nebular Hypothesis is the scientific explanation for the formation of __________.
the universe.
meteor showers.
our solar system.
clouds.
