Nature of Science
What changes scientific knowledge?
New Evidence
What would happen to a planet if it broke loose from the sun's gravity?
It would move in a straight line into space.
The unit that astronomers use to measure the distance between galaxies.
Light-Year
The supercontinent described by Wegener.
Pangaea
Where is the oldest layer of rock located?
At the bottom.
The idea that Earth is covered in huge slabs of rock that move is known as Plate Tectonic _____.
Theory
In this model, the sun and planets orbit Earth.
Geocentric
How many stars and galaxies are there?
Billions
At what kind of boundary do plates slip past each other?
Transform Boundary
What process can occur if vegetation is removed from Florida's beaches?
Erosion
A scientific law is based on observations that are
reproducible
Why is Venus hotter than Earth?
It is covered in a blanket of clouds.
What indicates a star's temperature?
Color
What did the hypothesis of continental drift eventually become?
Plate Tectonic Theory
Used to determine the relative ages of rocks.
Law of Superposition
What are Kepler's ideas about planetary motion known as?
Kepler's laws of planetary motion.
The moon is farthest away from the sun during what moon phase?
Full Moon
Larger stars tend to be brighter than smaller stars, but not necessarily _______
hotter
What can form where plates push together?
Mountains, Volcanoes
The overgrazing of livestock can cause what process?
Desertification
Why is a scientific model of the solar system limited?
It can't show every object in the solar system.
The moon is between the Earth and sun during which phase?
new moon
What do scientists measure in order to determine the distance to nearby stars?
Angles of light from the star.
How are tectonic plates moving when earthquakes are formed?
Sliding past each other.
What is a primary source of smog?
Emissions from cars and trucks.