Shared Flashcard Set

Details

Bowen Mid Term
Mid Term Flash Cards
51
Science
7th Grade
12/13/2011

Additional Science Flashcards

 


 

Cards

Term
During a controlled experiment, if you purposely change the temperature to test a hypothesis the temperature is called the
Definition
independent variable
Term
The fossils of dinosaurs of the same species were found in Siberia and in England. Determining that the rocks where each of these fossils were found are approximately the same age is an example of
Definition
a scientific explanation
Term
What happens to the particles of a substance when thermal energy is added to the substance?
Definition
its particles move faster
Term
Particles of a liquid
Definition
are free to move around one another but still touch
Term
Which of the following is true about scientists?
Definition
they tend to come from all kinds of backgrounds
Term
In a system, when energy is transformed from one form to another,
Definition
the total energy is conserved
Term
Energy is measured in units called
Definition
joules
Term
Heated air moved from baseboard heaters to the rest of a room in a process called
Definition
convection
Term
The electromagnetic waves with the highest frequencies are called
Definition
gamma rays
Term
Which of the following objects has no kinetic energy?
Definition
a picture hanging on a wall
Term
What happens when light passes from air into water?
Definition
the light slows down
Term
Clara placed an empty mug on the table and poured hot tea into the mug. When she went to pick up the mug it was too hot to hold. Which type of heat transfer occurred between the tea and the mug?
Definition
conduction
Term
Heat is transferred from one particle of matter to another within an object or between two objects in a process called
Definition
conduction
Term
In which state of matter are particles packed tightly together in fixed positions?
Definition
solid
Term
A measure of the average kinetic energy of the individual particles in an object is called
Definition
temperature
Term
When scientists put things into categories or group together items that are alike in some way, they are
Definition
classifying
Term
When observations deal with amounts or numbers they are called
Definition
quantitative observations
Term
Which is an example of using ethics in experiments?
Definition
considering the environmental impacts of an experiment
Term
The law of conservation of energy states that when one form of energy is transformed to another,
Definition
no energy is destroyed in the process
Term
Nearly 2,000 years ago the astronomer, Ptolemy, believed that all objects in space, including the sun, revolved around Earth. 500 years ago, Nicolaus Copernicus made observations showing that Earth and other planets revolved around the sun, which refuted Ptolemy's arguement. This is an example of how scientific knowledge
Definition
changes as a result of new evidence
Term
Which describes how opinion and scientific evidence are related?
Definition
an opinion is an idea that may be formed from evidence
Term
Why would a scientist reject a scientific theory?
Definition
new evidence contradicts it
Term
The force of gravity on a person or object on the surface of a planet is called
Definition
weight
Term
Which particles in atoms have a negative charge?
Definition
electrons
Term
Why is it useful for scientists to develop models for the structure of atoms?
Definition
atoms are too small to study directly
Term
Heat transfer occurs
Definition
only from warmer objects to colder ones
Term
Why is it imprtant for people to understand scientific principles and to think scientifically?
Definition
it allows people to make informed decisions
Term
The smallest particle that can be considered an element is called a (n)?
Definition
atom
Term
When you rub your hands together on a cold day, you use friction to transform
Definition
mechanical energy into thermal energy
Term
The energy associated with motion is called
Definition
kinetic energy
Term
Which of the following would be considered a good model of Earth?
Definition
a globe
Term
A solid, such as bismuth, has
Definition
a definite shape and a definite volume
Term
Which of the following has kinetic energy?
Definition
a rolling bowling ball
Term
Which of the following is a characteristic of the scientific method?
Definition
science is based on objective analysis of experimental data
Term
Which state of matter undergoes changes in volume most easily?
Definition
gas
Term
The basic SI unit of length is the
Definition
meter
Term
The range of electromagnetic waves placed in a certain order is called the
Definition
electromagnetic spectrum
Term
All elements are made of basic particles called
Definition
atoms
Term
Which electromagnetic waves have the longest wavelengths and lowest frequencies?
Definition
radio waves
Term
You are investigating a certain plant's ability to growq. All of the following data will be helpful except the
Definition
scientific name of the plant
Term
The transfer of energy by electomagnetic waves is called
Definition
radiation
Term
Which has the most thermal energy?
Definition
2-liters of water at 80 degrees C
Term
The bending of light rays as they enter a new medium is called
Definition
refraction
Term
You are investigating the numbers and types of birds in your neighborhood. If you watch a bird feeder to see which birds appear, you are
Definition
observing
Term
Which of the following statements about mass and weight is true?
Definition
weight measures the force of gravity on an object and mass measures the amount of matter an object contains
Term
Which parts of the atom move around the nucleus?
Definition
electrons
Term
In an atom, the number of protons equals the number of
Definition
electrons
Term
Joe decides that cereal is the best breakfast because he thinks cereal tastes better than other breakfast foods. Joe is being
Definition
subjective
Term
At the end of a roller coaster ride the brakes are applied and the coaster quickly comes to a stop. In this example the kinectic energy that the coaster had is converted to
Definition
thermal energy
Term
Which of the following would you measure using a balance?
Definition
mass
Term
Bowen Mid Term
Definition
Supporting users have an ad free experience!