Science final study guide Flashcards
I have 100 mL (milliliters) of water and 300 mL of water. Let’s compare.
Volume (different) Boiling pt (same)
Density (same) Melting pt (same)
During a sunshiny day, the sidewalks and roads are very hot. At night the sidewalks are much cooler. Why does this occur?
The sidewalks and roads absorb the heat from the sun during the day.
When materials are heated (thermal expansion)…they expand. Give 3 examples:
marshmallows in the microwave
metals lids on jars under hot water
increasing the temperature on most objects
When materials are heated does their temperature increase?
Yes!
When the temperature of a material increases, what is the movement of the atoms?
The atoms increase speed (move faster) and move farther apart.
What happens to the atoms of an object when the object cools down?
The atoms move slower and decrease the distance between them (move closer together).
What does the term “abiotic” mean?
Non- living
Name 3 abiotic elements in an ecosystem.
Water, rocks, soil, air
Why is photosynthesis so important for plants?
Photosynthesis is the process that creates food and energy for green plants.
List the overall order of energy flow in a food chain:
- SUN, producers, consumers, DECOMPOSERS
Why are the petals on a flower an advantage?
Petals are colorful and scented so they attract pollinators.
What are the female parts of the flower and what are their purposes?
The whole thing is used to produce OVULES.
The Pistil is the whole female part .
-Stigma is where the pollen attaches
-The style is the long tube that attaches the stigma to the ovary
-Ovary produces eggs
-ovules are eggs
What are the male parts of the flower?
The whole part of the flower is called the staMEN.
-it is the male reproductive part
-Anther produces pollen
-filament supports the anther
What is the difference between conductor and an insulator?
CONDUCTOR:
-Any material that allows electric current to pass through it.
EXAMPLES:
-Copper
-aluminum
-steel
-any metal
INSULATOR:
-Any material that doesn’t allow electric current to pass through it
(Like the protective cover on a wire)
EXAMPLES:
-Plastic
-rubber
-glass
-cloth
-wood
what are the layers of the earth?
Crust,Mantle,Outer core,Inner core
How many miles thick is the crust?
5-25 miles thick
What are the two different types of crusts?
Oceanic,and continental
What causes earthquakes?
The movement of the tectonic plates moving.
What is the Lithosphere,and Asthenosphere made of?
basalt,and granite
what is the largest layer of the earth and what is it made of?
the mantle and is 1,800 miles thick and is made of magma.
How hot is the Mantle?
1,600-4,000
What is the outer core made of?
Iron and Nickle
How thick is the outer core and what is the range of temperatures
1,400 miles thick and has temperatures between 4000-9000
what are the three different plate boundaries?
Divergent,transform,convergent
How are earthquakes, sound, and light waves similar
They all transfer energy.
What way does transverse waves move,and what is an example?
up and down
EXAMPLE:
-EM/Light Waves are Transverse waves
What way does longitudinal waves move,and what is an example?
Back and forth
EXAMPLE:
-sound waves
Light and the eye:
Light bounces off objects and then enters our eyes. This creates a relationship between the eye and light.
