Solar System Groups
Nebular Theory
Radiometric Dating
Kepler's Laws
Name that planet
100
Gas, large in size, longer orbit times
Outer planets
100
Nebular Theory is our best explanation for how the __________________ formed.
Solar System
100
Radiometric dating is used to find the ______ of an object.
age
100
The shape of all orbits
Ellipse
100
Saturn
200
Composition of inner planets
Rocky
200
Scientists think this burst of energy emitted by the Sun is responsible for the inner planets being rocky and small and the outer planets being large and gas.
Solar Winds
200
What is the name of the isotope that the unstable isotope decays into?
daughter isotope
200
According to Kepler's Second Law, a planet moves fastest when it is...
closer to the Sun
200
The 8th and furthest planet from the Sun.
Neptune
300
If an object is non-spherical in shape and takes around 800 Earth days to orbit the Sun it is probably part of the __________.
asteroid belt
300
Craters are evidence for which aspect of Nebular Theory?
Accretion
300
What percentage of the parent isotope remains if the object has gone through 2 half lives?
25%
300
Three possible orbits are shown below. Which ones are correct according to Kepler's First Law?
B and C
300
This planet takes around 225 Earth days to complete one orbit the Sun.
Venus
400
List some characteristics of Kuiper Belt objects
Icy/rocky, extremely long orbit times, cold
400
According to Nebular Theory, which large solar system object formed first?
the Sun
400
How many years is 1 half life of Strontium 90?
25 years
400
According to Kepler's 3rd Law, which planet takes the fourth shortest time to complete one orbit around the Sun?
Mars
400
This small planet is heavily cratered.
Mercury
500
If an object takes 300 days to orbit the Sun, it's probably part of which group?
inner planets
500
Which inner planet has very few craters? And why is this the case?
Earth, because it has processes that can "erase" craters. (Volcanoes, plate tectonics, water, erosion)
500
How old is an object if it contains 6.25% of the parent isotope strontium 90?
100 years old
500
Place these planets in order from shortest orbit time to longest orbit time.
Mars, Earth, Saturn, Jupiter
Earth, Mars, Jupiter, Saturn
500
This planet has the coldest average surface temperature
Neptune