Science

hypothesis

A good scientist forms a ________ and then does experiments or observation to see if it is true. = an idea that is suggested as an explanation for something, but that has not yet been proved to be true

molecule

A water ______ contains one atom of oxygen and two atoms of hydrogen. = the smallest unit into which any substance can be divided without losing its own chemical nature, usually consisting of two or more atoms:

evolution

Charles Darwin came up with the theory of ______. = the scientific idea that plants and animals develop and change gradually over a long period of time

environment

Darwin said that living things adapt to their _______. = the natural features of a place, for example its weather, the type of land it has, and the type of plants that grow in it

theory

Darwin's _______ of evolution says that plants and animals change over time and adapt to their environments in order to survive. = an idea or set of ideas that is intended to explain something about life or the world

magnet

Don't put your BART card next to a ____. = a piece of iron or steel that can stick to metal or make other metal objects move towards itself

relativity

Einstein developed the theory of _____. = the relationship in physics between time, space, and movement according to Einstein's theory

comet

Haley's _____ can be seen from Earth every 75 years. = an object in space like a bright ball with a long tail, that moves around the sun

genes

Half of your _____ come from your mother and the other half come your father. = a part of a cell in a living thing that controls what it looks like, how it grows, and how it develops. People get their genes from their parents

acid

He burned himself when the ____ touched his skin. = a chemical substance that has a pH of less than 7. When it is strong it can burn holes in material or damage your skin; opposite of base

botany

He is interested in ______. = the scientific study of plants

ecology

He is studying _______. = the way in which plants, animals, and people are related to each other and to their environment, or the scientific study of this

physics

He is taking a _____ class. = the science concerned with the study of physical objects and substances, and of natural forces such as light, heat, and movement

mammals

Humans, dogs, and whales are _______. = a type of animal that drinks milk from its mother's body when it is young.

element

Hydrogen is the simplest _____. = a simple chemical substance such as carbon or oxygen that consists of atoms of only one kind

atom

Hydrogen is the simplest element and is an _____ that has one proton and one electron. = the smallest part of an element that can exist alone or can combine with other substances to form a molecule:

solid

Ice is the ______ form of water. = a firm object or substance that has a fixed shape, not a gas or liquid:

bonds

In each methane molecule there are four CH ______. = the chemical force that holds atoms together in a molecule:

divide

In mitosis, cells _______ in order to reproduce. = split into two or more parts.

dependent

In the sentence: "Time Spent Studying" causes a change in "Test Score," the test score is the _______________ variable. = the result of your experiment

independent

In the sentence: "Time Spent Studying" causes a change in "Test Score," the time spent studying is the _______________ variable. = the thing you change in the experiment to see if it affects the result.

observations

Jane Goodall made many _____ about the behavior of gorillas.

reptiles

Lizards and alligators are _____. = a type of animal, such as a snake or lizard, whose body temperature changes according to the temperature around it, and that usually lays eggs to have babies

planet

Mercury is the smallest ____ in our solar system. = a very large round object in space that moves around the sun or another star

thermodynamics

Newton has four laws of _____. = the science that deals with the relationship between heat and other forms of energy

black hole

Nothing can escape a _____. = an area in outer space into which everything near it, including light, is pulled

radioactive

Nuclear power plants produce ______ waste. = substance is dangerous because it contains radiation (=a form of energy that can harm living things)

ecosystem

One change in an _______ can cause a lot of damage. = all the animals and plants in a particular area, and the way in which they are related to each other and to their environment

properties

One of the _______ of a diamond is that it is very hard. = a quality or power that a substance, plant etc has [= quality, characteristic]:

current

One type of _____ is AC, and the other is DC. = a flow of electricity through a wire

balance

Pesticides seriously upset the ____ of nature. = a state in which opposite forces or influences exist in equal or the correct amounts, in a way that is good

organisms

Scientists have found strange ______ living at the bottom of the sea. = an animal, plant, human, or any other living thing.

objective

Scientists need to be _______ when doing research. = based on facts, or making a decision that is based on facts rather than on your feelings or beliefs; opposite of subjective

biology

She got her degree in ______. = the scientific study of living things

cell

She has a low white blood ____ count. = the smallest part of a living thing that can exist independently

quantum mechanics

She is studying ______. = the scientific study of the way that atoms and smaller parts of things behave

physiology

She is taking a course on ________. = the science that studies the way in which the bodies of living things work

chemistry

She studied ______ in college. = the science that is concerned with studying the structure of substances and the way that they change or combine with each other

motion

She studies the _____ of the planets. = the process of moving or the way that someone or something moves

reproduce

Some animals _______ through live birth while others lay eggs. = when an animal or plant makes more young plants or animals:

scientific method

Students learn about the _______. = the usual process of finding out information in science, which involves testing your ideas by performing experiments and making decisions based on the results

compound

Sulphur dioxide is a ______ of sulphur and oxygen. = a substance containing atoms from two or more elements; a combination of two or more things

mass

The Sun makes up 99.9% of the _______ of our solar system. = the amount of material in something

fusion

The Sun uses _____ to produce light and heat by combining hydrogen atoms. = a physical combination of separate things

proton

The ____ is a very small piece of matter with a positive electrical charge that is in the central part of an atom

neutron

The ____ is the part of an atom that has no electrical charge

electricity

The _____ went out during the storm. = the power that is carried by wires, cables etc, and is used to provide light or heat, to make machines work etc

telescope

The astronomer looked through a _____.

fission

The atomic bomb and nuclear power plants use _____ to create energy. = the process of splitting an atom to produce large amounts of energy or an explosion

species

The biologists were studying several _____ of birds. = a group of animals or plants whose members are similar and can breed together to produce young animals or plants

membrane

The cell ______ was damaged. = the thin outer layer of a cell that separates the inside from the outside

photosynthesis

The children studied _____ in school. = the process that green plants use to convert sunlight into energy.

orbit

The earth is in _____ around the Sun. = the curved path travelled by an object which is moving around another much larger object such as the Earth, the sun etc

asteroid

The earth was hit by an _____. = a very small planet in space

natural selection

The idea of _____ is that organisms that can adapt to their environment will survive.

substance

The leaves were covered with a strange sticky _______ = a particular type of solid, liquid, or gas.

randomly

The people in the experiment were _______ put into two groups. = happening or chosen without any definite plan, aim, or pattern; by chance

prove

The results of her experiment ______ that his hypothesis was right. = to show that something is true by providing facts, information etc

statistics

The scientific report includes many ______. = a set of numbers which represent facts or measurements

microscope

The scientist analyzed the cells using a ______.

test tube

The scientist picked up a ____.

particle

The scientist use a _______ accelerator to study quantum physics. = one of the types of pieces of matter including.electrons, protons, and neutrons that make up atoms

data

The scientists collected ______ about the use of pesticides in farming. = information or facts:

experiment

The scientists did an ________ to see what happens when they combine these chemicals. = a scientific test done to find out how something reacts under certain conditions, or to find out if a particular idea is true

analyze

The scientists have to ______ the data before they can say what caused this problem. = to examine or think about something carefully, in order to understand it

volume

The scientists measured the ______ of container = the amount of space in a container

DNA

The scientists will do _____ testing on the people in the experiment. = stands for deoxyribonucleic acid which is the substance that carries genetic information in the cells of the body

formulas

The students had to memorize some ______. = a series of numbers or letters that represent a mathematical or scientific rule

space

The studied about the history of _____ travel. = the area beyond the Earth where the stars and planets are

obsolete

The typewriter is now pretty much _____. = no longer useful, because something newer and better has been invented

empirical

There is _____ evidence to support global warming. = based on scientific testing or practical experience, not on ideas

probability

There is a high ______ that there will be an earthquake in the next few years. = how likely something is, sometimes calculated in a mathematical way [= likelihood, chance]

gravity

There is no ____ in the space shuttle. = the force that causes something to fall to the ground or to be attracted to another planet

control

There was a ______ group to see drug really had an effect during the experiment. = a person, group etc in an experiment that does not get the drug, etc. to see if the drug really works or the effects are just by chance.

reaction

There was a chemical _____ that caused the explosion. = a chemical change that happens when two or more substances are mixed together

gas

There was a poisonous ____ in the room. = a substance such as air, which is not solid or liquid, and usually cannot be seen

variables

There were too many _____________ in the experiment, so they didn't know what caused the result. = the thing that changes in the experiment

survive

They are not sure if the plants will ______ this cold winter. = to continue to live normally in spite of many problems

charge

This battery has no ____. = electricity that is put into a piece of electrical equipment such as a battery

genetic

This disease is ______. = relating to genes and the idea of passing things from parent to child

metabolism

This drug speeds up your ________. = the chemical processes by which food is changed into energy in your body:

electromagnetism

This machine uses _____. = a force relating to electric and magnetic fields, or the study of this force

liquid

Water is a ______. = a substance that is not a solid or a gas, for example water or milk:

galaxy

We live in the Milky Way _____. = one of the large groups of stars that make up the universe

generate

Wind turbines _______ electricity for the local community = to produce heat, electricity, or another form of energy

invented

Alexander Graham Bell _______ the telephone in 1876. = to make, design, or think of a new type of thing

adapt

Animals have to _____ to new environments in order to survive. = to gradually change your behavior and attitudes in order to be successful in a new situation

discoveries

Astronomers have made important _______ about our galaxy using the Hubble Telescope. = a fact or thing that someone finds out about, when it was not known about before

evidence

At present we have no ______ of life on other planets. = facts or signs that show clearly that something exists or is true

taxonomy

Biologists organize plants and animals into a _____. = the process or a system of organizing things into different groups that show their natural relationships, especially plants or animals

engineering

_______ is a popular major. = the work involved in designing and building roads, bridges, machines etc

electron

a very small piece of matter with a negative electrical charge that moves around the nucleus (=central part) of an atom [↪ proton, neutron]