Radio waves, visible light from the sun, infrared "rays" from heat lamps, the waves that heat food in a microwave oven, ultraviolet rays, and X-rays are all considered types of _______________________.
all are different states of matter
How do liquid water, ice, and water vapor differ from each other?
Fireworks exploding in the sky and giving off light are an example of an ______________.
During photosynthesis, plants transform electrmagnetic energy from the sun into ____________________.
When scientists create a representation of a complex process, the are________________________.
When scientists put things into categories or group together items that are alike in some way, they are ____________.
Making a foecast of what will happen in the future based on past experience or evidence is called _______________.
Explaining or interpreting the things you observe based on reasoning from what you already know is called________________.
Observations that deal with descriptions that cannot be expressed in numbers are called ____________________.
Being able to identify good sources of scientific information and apply the knowledge to problems in your life is part of having_____________.
A statement that describes what scientists expect to happen every time under a particular set of conditions is a _______________.
A summary of what you have learned from a scientific experiment is called a _____________.
In a scientific experiment, the responding variable can also be called the _____________.
An organized way to collect and record scientific observation is with a ________________.
The factor that may change in response to the manipulated variable is called the __________.
A possible explanation for a set of observations or possible answer to a scientific question is called a ______________.
can spread apart
The particles of a gas---a.) are packed very closely, b.) do not move, c.) or can spread far apart
a fixed volume
A liquid has---a.) a rigid shape, b.) a fixed volume, c.) neither a rigid shape nor fixed volume, or d.)both a rigid shape and fixed volume.
A liquid with low viscosity---a.) has a definite shape, b.) flows quickly, c.)flows slowly, or d.)fills its container.
As the fas in a rigid container is heated, it--- a.)pressure increases, b.)volume increases, c.)pressure decreases, or d.)volume decreases.
Because of surface tension, a liquid---a.)resists flowing, b.)forms a crystalline solid, c.)takes the shape of its container, or d.)forms droplets.
According to Boyles law, as the volume of a gas is made smaller, the pressure of the gas __________.
hard and often
At high pressure, gas particles push against the wall of the container---a.)hard and often, b.)very gently, c.)rarely, d.)never
puddle drying up
Which is an example of vaporization---a.(puddle drying up, b.)ice cream cone dripping, c.)drops of dew on grass
When the particles of a gas lose thermal energy, they move---a.)faster, b.)slower, c.)at the same speed, d.)they stop