Show:
Sound
Earth Science
Light
Life Science
Miscellaneous
100
The number of times a vibration occurs in a given unit of time is its _______.
Frequency.
100
What provides information about life and conditions of the past? What type of rocks is this information found in?
Fossils of organisms in sedimentary rocks
100
When light bounces off a smooth, shiny surface, it _______.
Reflects
100

what gas is released during photosynthesis

oxygen

100
The periodic table is a chart/list of _______.
Elements
200

Sound travels ____ than light

slower

200
When layers of sediment have been cemented and compacted, what type of rock is formed?
Sedimentary
200

What is the color with the highest frequency?

violet

200

What is the purpose of plankton in a food web?

to create energy in the food web

200
The inner most layers of the earth are composed primarily of _______ and _______.
Iron and Nickel
300
What is the frequency of a vibrating object?
Pitch
300
Plates in the earth that move apart are called _______.
Divergent boundaries
300

When light slows down and bends, it _______.

Refracts

300

Arrows of a food web point from the ____ to the ____

producer to the consumer

300
As temperature decreases, many kinds of matter change from liquid to _______.
Solid
400

Can sound travel in a vacuum (without matter), like space?

No

400
Scientific evidence indicates the earth is very ancient, approximately _______ years old.
4.5 billion
400
What do you call an object that allows some light to pass through?
Translucent
400

What is a population?

the number of the same organism. 

400
Most plants have special tissues to transport food and water. These are called _______.
Vascular Plants
500
What type of wave is a sound wave?
Compression
500
Name the four major layers of the earth....
Crust Mantle Inner Core Outer Core
500

Why does a prism break light waves into the different colors and what is the order?

Because of different wavelengths, and ROYGBIV

500
if a consumers food on a web disappears, what could happen to the organism

it could get sick, die, or eat much more of other organisms

500
Rocks move and change over time due to _______ and _______ within the earth.
Heat and Pressure