Show:
Sound
Earth Science
Light
Living Systems
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 shape do plant cells tend to be?

Rectangular

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

Sound is a form of ___________.

Energy

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

Light that bends is called

Refracted

200

What two parts of a plant cell are NOT in an animal cell?

Cell wall, chloroplast

200
The inner most layers of the earth are composed primarily of _______ and _______.
Iron and Nickel
300

High and Low frequency cause high and low _______.

Pitch

300
Plates in the earth that move apart are called _______.
Divergent boundaries
300

Light CANNOT pass

opaque

300

What is the jellylike fluid in a cell?

Cytoplasm

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

What is the top of a sound wave called?

Crest

400

What layer of the earth is made of solid nickel and iron?

inner core

400
What do you call an object that allows some light to pass through?
Translucent
400

What animals DO NOT have a backbone?

Invertebrate

400
Most plants have special tissues to transport food and water. These are called _______.
Vascular Plants
500

What is another name for a sound wave?

Compression or Longitudinal

500
Name the four major layers of the earth....
Crust Mantle Inner Core Outer Core
500

What color of the rainbow has the longest wavelength? What color has the shortest?

Red, Violet

500
Plants that do not have special tissues to transport food and water are called _______.
Nonvascular
500
Rocks move and change over time due to _______ and _______ within the earth.
Heat and Pressure