Unit 4: Earth in the Solar System
Call Kai
Learn
Practice Test
Spaced Repetition
Match
Flashcards
Knowt Play1/20
There's no tags or description
Looks like no tags are added yet.
Name | Mastery | Learn | Test | Matching | Spaced | Call with Kai |
|---|
No analytics yet
Send a link to your students to track their progress
21 Terms
Solar System Formation - What is the Nebular Theory?
The solar system formed from a rotating cloud of gas and dust.
Solar System Formation - Why are inner planets rocky?
A: High temperatures near the Sun allowed only rock and metal to condense.
Solar System Formation - Q: Why are outer planets gas/ice giants?
A: Cooler temperatures farther from the Sun allowed gases and ices to collect.
Solar System Formation - Q: Why do planets orbit in the same direction?
A: They formed from the same rotating disk.
Geocentric vs Heliocentric - Q: What is the geocentric model?
A: Earth-centered model of the solar system.
Geocentric vs Heliocentric - Q: What is the heliocentric model?
A: Sun-centered model of the solar system.
Geocentric vs Heliocentric - Q: What evidence supports the heliocentric model?
A: Planet motions and observations by astronomers like Galileo.
Kepler’s Laws - Q: What shape are planetary orbits?
A: Ellipses.
Kepler’s Laws - Q: When do planets move fastest?
A: When closest to the Sun.
Kepler’s Laws - Q: Which planets have longer years?
A: Planets farther from the Sun.
Gravity - Q: What two things affect gravity?
A: Mass and distance.
Gravity - Q: What happens to gravity when distance increases?
A: Gravity gets weaker quickly.
Gravity - Q: What happens when mass increases?
A: Gravity becomes stronger.
Radiometric Dating - Q: What is half-life?
A: The time for half of a radioactive substance to decay.
Radiometric Dating - Q: If 1/4 remains, how many half-lives passed?
A: Two half-lives.
Radiometric Dating - Q: Why do scientists use radiometric dating?
A: To find the age of rocks and fossils.
Earth-Sun Interactions - Q: What causes seasons?
A: Earth’s tilt.
Earth-Sun Interactions - Q: What affects climate over long periods?
A: Changes in tilt and orbit shape
Solar Wind & Magnetic Field - Q: What is solar wind?
A: Charged particles released from the Sun.
Solar Wind & Magnetic Field - Q: How does Earth’s magnetic field help us?
A: It protects Earth from harmful solar particles.
Solar Wind & Magnetic Field - Q: What causes auroras?
A: Solar particles interacting with Earth’s atmosphere.