6th Grade Science Test 11 Flashcards
a tiny group of two or more atoms that are bonded tightly together
molecule
a substance composed of only one atom
element
substances that are composed of more than one type of atom bonded together
compounds
anything that takes up space and has mass
matter
the amount of matter in one unit of volume
density
the speediest planet
mercury
often called the morning star
Venus
the planet whose largest moon is Ganymede
Jupiter
best known for its rings
Saturn
discovered by the Herschels
Uranus
a measure of the pull of gravity on an object
weight
the amount of matter that makes up an object
mass
the metric unit used to measure an object’s mass
gram
the tiny particles that all matter is composed of
atoms
the name given to the number of protons in an element
atomic number
positive particles found in the nucleus
protons
negative particles found in an atom
electrons
lacking an electrical charge
netural
formed by electrons that are in orbit at about the same distance from the nucleus
shell
the chemical reaction that occurs when a substance reacts rapidly with oxygen
combustion
the first man to set foot on the moon
Neil Armstrong
the man who discovered that white light is a combination of many colors
Sir Isaac Newton
the first man to travel in space
Yuri Gagarin
the first American to orbit the earth
John Glenn
the man known as the “Father of Modern Rocketry”
Robert Goddard
a single rise or depression in a wave
pulse
the bending of any wave direction at the boundary between two wav media
refraction
an orbit that allows a satellite to remain in the same spot above the earth at all times
geostationary
a back and forth motion that repeatedly follows the same pattern
oscillation
the length of one complete wave or cycle of oscillation
wavelength
large clouds of gas and dust floating in space
nebulae
the hot center of the sun
core
the brightest star in the night sky
Sirius
a star system containing from millions to billions of stars
galaxy
the hottest region of the sun’s atmosphere
corona
found in the constellation Ursa Minor, the North Star is also known as
Polaris
volcano formed by alternating layers of tephra and lava. Mt. St. Helens is an example
composite volcano
volcano formed from large amounts of very fluid lava that built up gradually. The Hawaiian Islands were formed but his type of volcano.
shield volcano
volcano formed by eruptions of mostly tephra and very little lava. Paricutin is an example.
cinder cone volcano
a scientist who studies the structure of the earth
geologist
any trembling or shaking of the earth’s crust
earthquake
magma that has reached the earth’s surface
lava
rock that is formed by sand and mineral particles pressed together
sedimentary rock
rock that has been changed by heat or pressure into a new kind of rock
metamorphic rock
the process of arranging animals or other things into groups according to their similarities
classification
all insects have __ distinct body regions
three
the ability of a crustacean to grow back lost body parts
regeneration
animals that have jointed appendages, segmented bodies, and external skeletons
crustaceans
spiders belong to a different class than insects and are known as
arachnids
Be able to identify the five main parts of a flower on a diagram.
ovule sepal pistil stamen petal
