Sun-Earth-Moon System
The gravitational pull of the Sun on Earth causes Earth to _______ around the Sun in a nearly circular orbit.
revolve
The sky is divided into 88 ____________.
constellations
A ____________ is the preserved remains or evidence of ancient organisms.
fossil
As continents float in the mantle, they rise and fall to maintain the balance of ________.
isostasy
The invention of the __________ led to discoveries about cells.
microscope
This is the lit part of the Moon that you can see from Earth. It changes during the lunar cycle as the Moon revolves around Earth.
phase
Apparent magnitude and luminosity measure a star's _____________.
brightness
Organisms are more likely to become fossils if they have ______ parts and are buried ______ after they die.
hard, quickly
Erosion _______ the sizes of continents.
reduces
An _________ is classified as a living thing because it has all the characteristics of life
organism
When the Moon's shadow appears on Earth's surface, a ____________ occors.
solar eclipse
Three major types of __________ are spiral, elliptical and irregular.
galaxies
_________ are scientists who use clues from fossils to learn about ancient life and the environments ancient organisms lived in.
paleontologists
______ and plate motion move rocks through the rock cycle.
uplift
Cell structures called _______ have specific functions, such as supporting a cell, moving a cell, controlling activities, processing energy, and transporting molecules.
organelles
When the Moon moves into Earth's shadow, a _______________ occurs.
lunar eclipse
The _____________ galaxy is the spiral galaxy that contains our solar system.
Milky Way
__________ is the age of rocks and geologic features compared with rocks and features nearby.
relative age
___________ can create large area of faulting and fracturing, not all of which can be seen at Earth's surface.
transform faults
All living things release energy from food molecules through _________.
cellular respiration
These occur twice each day in the seas and are caused by the gravitational pull of the Moon and the Sun on Earth.
tides
Stars shine because of the process of ______________ in their cores.
nuclear fusion
__________ is the age in years of a rock or object.
Compression, ________, and shear stress can deform or break rocks.
tension
Some cells make food molecules using light energy through the process of ________.
photosynthesis