Science final study guide

Question 1

I have 100 mL (milliliters) of water and 300 mL of water. Let’s compare.

Answer 1

Volume (different) Boiling pt (same)
Density (same) Melting pt (same)

Question 2

During a sunshiny day, the sidewalks and roads are very hot. At night the sidewalks are much cooler. Why does this occur?

Answer 2

The sidewalks and roads absorb the heat from the sun during the day.

Question 3

When materials are heated (thermal expansion)…they expand. Give 3 examples:

Answer 3

marshmallows in the microwave
metals lids on jars under hot water
increasing the temperature on most objects

Question 4

When materials are heated does their temperature increase?

Answer 4

Yes!

Question 5

When the temperature of a material increases, what is the movement of the atoms?

Answer 5

The atoms increase speed (move faster) and move farther apart.

Question 6

What happens to the atoms of an object when the object cools down?

Answer 6

The atoms move slower and decrease the distance between them (move closer together).

Question 7

What does the term “abiotic” mean?

Answer 7

Non- living

Question 8

Name 3 abiotic elements in an ecosystem.

Answer 8

Water, rocks, soil, air

Question 9

Why is photosynthesis so important for plants?

Answer 9

Photosynthesis is the process that creates food and energy for green plants.

Question 10

List the overall order of energy flow in a food chain:

Answer 10

• SUN, producers, consumers, DECOMPOSERS

Question 11

Why are the petals on a flower an advantage?

Answer 11

Petals are colorful and scented so they attract pollinators.

Question 12

What are the female parts of the flower and what are their purposes?

Answer 12

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

Question 13

What are the male parts of the flower?

Answer 13

The whole part of the flower is called the staMEN.
-it is the male reproductive part
-Anther produces pollen
-filament supports the anther

Question 14

What is the difference between conductor and an insulator?

Answer 14

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

Question 15

what are the layers of the earth?

Answer 15

Crust,Mantle,Outer core,Inner core

Question 16

How many miles thick is the crust?

Answer 16

5-25 miles thick

Question 17

What are the two different types of crusts?

Answer 17

Oceanic,and continental

Question 18

What causes earthquakes?

Answer 18

The movement of the tectonic plates moving.

Question 19

What is the Lithosphere,and Asthenosphere made of?

Answer 19

basalt,and granite

Question 20

what is the largest layer of the earth and what is it made of?

Answer 20

the mantle and is 1,800 miles thick and is made of magma.

Question 21

How hot is the Mantle?

Answer 21

1,600-4,000

Question 22

What is the outer core made of?

Answer 22

Iron and Nickle

Question 23

How thick is the outer core and what is the range of temperatures

Answer 23

1,400 miles thick and has temperatures between 4000-9000

Question 24

what are the three different plate boundaries?

Answer 24

Divergent,transform,convergent

Question 25

How are earthquakes, sound, and light waves similar

Answer 25

They all transfer energy.

Question 26

What way does transverse waves move,and what is an example?

Answer 26

up and down
EXAMPLE:
-EM/Light Waves are Transverse waves

Question 27

What way does longitudinal waves move,and what is an example?

Answer 27

Back and forth
EXAMPLE:
-sound waves

Question 28

Light and the eye:

Answer 28

Light bounces off objects and then enters our eyes. This creates a relationship between the eye and light.