Sound
The number of times a vibration occurs in a given unit of time is its _______.
Frequency.
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
When light bounces off a smooth, shiny surface, it _______.
Reflects
What shape do plant cells tend to be?
Rectangular
The periodic table is a chart/list of _______.
Elements
True or False.
Sound travels faster through a solid than by a gas.
True
When layers of sediment have been cemented and compacted, what type of rock is formed?
Sedimentary
True or False.
Sound travels faster than light.
False
The vacuole's function in a plant.
What is store food, water, and waste.
The inner most layers of the earth are composed primarily of _______ and _______.
Iron and Nickel
What is the frequency of a vibrating object?
Pitch
Plates in the earth that move apart are called _______.
Divergent boundaries
When light slows down and bends, it _______.
Refracts
The control center for the plant cell.
What is the nucleus.
If you increase the loudness, you increase the _______.
Amplitude
Scientific evidence indicates the earth is very ancient, approximately _______ years old.
4.6 billion
What do you call an object that allows some light to pass through?
Translucent
This liquid is present within the cell membrane of all cell types and contains all organelles and cell parts. This jelly-like substance helps all the cell parts move around the cell.
What is cytoplasm.
What type of wave is a sound wave?
Compression
Name the four major layers of the earth....
Crust Mantle Inner Core Outer Core
A lens that bulges outward is
convex
New cells do not come from existing cells. The body produces new cells.
False.
New cells come from existing cells.