Question | Answer |
A tiny group of two or more atoms that are bonded tightly together is called a(n) ____________. | Molecule |
A substance composed of only one atom is called a(n) ___________. | Element |
Substances that are composed of more than one type of atom bonded tightly together are called _____________. | Compounds |
Anything that takes up space and has weight is called _______. | Matter |
The amount of matter in one unit of volume is called __________. | Density |
Mercury is the speediest planet, true or false? | True. |
Mars is often called the morning star, true or false? | False. Venus is often called the morning star. |
Jupiter's largest moon is Ganymede, true or false? | True. |
Pluto is best known for its rings, true or false? | False. Saturn is best known for its rings. |
Neptune was discovered by the Herschels, true or false? | False. Uranus was discovered by the Herschels. |
___________ is the measure of the pull of gravity on an object. | Weight |
__________ is the amount of matter that makes up an object. | Mass |
A(n) __________ is the metric unit used to measure an object's mass. | Gram |
___________ are the tiny particles that all matter is composed of. | Atoms |
__________ __________ is the name given to the number of protons in an element. | Atomic number |
___________ are the positively charged particles found in the nucleus. | Protons |
__________ are the negative particles found in an atom. | Electrons |
Anything that lacks an electrical charge is called _________. | Neutral |
A ___________ is formed by electrons that are in orbit at about the same distance from the nucleus. | Shell |
___________ is the chemical reaction that occurs when a substance reacts rapidly with oxygen. | Combustion |
The first man to set foot on the moon was ______ __________. | Neil Armstrong |
The man who first saw colors in white light was _____ ______ ________. | Sir Isaac Newton |
The first man to travel in space was ________ __________. | Yuri Gagarin |
The first American to orbit the earth was ________ _________. | John Glenn |
The man known as the "Father of Modern Rocketry" was _________ ____________. | Robert Goddard |
A(n) ___________ is a single rise or depression in a wave. | Pulse |
_____________ is the bending of a wave's direction at the boundary between two wave media. | Refraction |
A(n) ____________ _________ is an orbit that allows a satellite to remain in the same spot above the earth at all times. | Geostationary orbit |
_____________ is a back and forth motion that repeatedly follows the same path. | Oscillation |
________________ is the length of one complete wave or cycle of oscillation. | Wavelength |
_______________ are large clouds of gas and dust floating in space. | Nebulae |
The __________ is the hot center of the sun. | Core |
The brightest star in the night sky is ___________. | Sirius |
A(n) ____________ is a star system containing from millions to billions of stars. | Galaxy |
The hottest region of the sun's atmosphere is the _____________. | Corona |
The North Star, ____________, is found in the constellation Ursa Minor. | Polaris |
What type of volcano is formed by alternating layers of tephra and lava, such as Mt. St. Helens? | A composite volcano. |
What type of volcano is formed from large amounts of very fluid lava that built up gradually? (The Hawaiian Islands were formed by this type of volcano.) | A shield volcano. |
What type of volcano is formed by eruptions of mostly tephra and very little lava, such as Parictutin? | A cinder cone volcano. |
A scientist who studies the structure of the earth is called a(n) ______________. | Geologist |
Any trembling or shaking of the earth's crust is called a(n) _______________. | Earthquake |
Magma that has reached the earth's surface is called _________. | Lava |
Rock that is formed by sand and mineral particles pressed together is called __________ rock. | Sedimentary |
Rock that has been changed by heat or pressure into a new kind of rock is called a ______________ rock. | Metamorphic |
The process of arranging animals or other things into groups according to their similarities is called organization, true or false? | False. The process of arranging animals or other things into groups according to their similarities is called classification. |
All insects have six distinct body regions, true or false? | False. All insects have three distinct body regions. |
Regeneration is the ability of a crustacean to grow back lost parts, true or false? | True. |
Animals that have jointed appendages, segmented bodies, and external skeletons are called crustaceans, true or false? | True. |
Spiders belong to a different class than insects that are known as arachnids, true or false? | True. |
Sepals | Green, leaf-like structures attached to the base of a flower bud as it develops. |
Petal | The most noticeable, brightly colored part of a flower that helps to attract bees or other creatures. |
Stamens | The structure arranged in a ring around the pistil of a flower that make and hold pollen. |
Pistil | A long tube in the middle of a flower that makes seeds. |
Ovule | The undeveloped seeds of a flower. |