science unit 4

Question 1

what is the significance of water

Answer 1

all living things need water
we cant digest food or grow things without water
we need abt 1-2L of water daily to keep our organs working properly

Question 2

what Is ment by the saying Canada has water wealth

Answer 2

in canada there is no water shortage and most people don’t need to walk long distances to get fresh water

Question 3

how does not having easy access to water effect the way a person lives

Answer 3

millions of people in Africa and aisa spend hours collecting water to do there daily tasks leaving less time for school and learning

Question 4

potable water

Answer 4

water that’s safe for humans to drink

Question 5

canals

Answer 5

a human-made waterway that allows boats and ships to pass from one body of water to another.

Question 6

locks

Answer 6

short confined section of a canal or other waterway in which the water level can be changed by the use of gates and sluices, used for raising and lowering vessels between two gates.

Question 7

what are the 3 states of water

Answer 7

liquid solid and gas

Question 8

what percentage of the earth is covered in water

Answer 8

seventy percent

Question 9

how much of the earth total water is fresh

Answer 9

three percent

Question 10

average depth of oceans

Answer 10

3.2km

Question 11

what is serface water

Answer 11

serface water is water that is found above ground

Question 12

ground water is always moving slowly out of our site eventually where does it go

Answer 12

eventually it reaches a wetland river or lake it might also flow to a natural spring

Question 13

why does ocean ice becomes fresh water

Answer 13

the salt in salt water doesn’t frezze with the water all ocean ice becomes fresh water

Question 14

describe the water cycle

Answer 14

describes the continuous movement of water on, above, and below the surface of the Earth

Question 15

North America has 5 ocean watershed what are they

Answer 15

artic ,Atlantic, gulf of Mexico,Hudson’s bay and pacific

Question 16

salinity

Answer 16

the amount of dissolved salts in a body of water,

Question 17

reservior

Answer 17

a large natural or artificial lake used as a source of water supply.

Question 18

aquafier

Answer 18

body of permeable rock which can contain or transmit groundwater.

Question 19

Water table

Answer 19

The water table is an underground boundary between the soil surface and the area where groundwater saturates spaces between sediments and cracks in rock.

Question 20

Glacier

Answer 20

an accumulation of ice and snow that slowly flows over land

Question 21

Ground water

Answer 21

water that exists beneath the Earth’s surface in the soil and rocks,

Question 22

Ice sheet:

Answer 22

a permanent layer of ice covering an extensive tract of land, especially a polar region.

Question 23

Polar icecap:

Answer 23

dome-shaped sheets of ice found near the North and South Poles

Question 24

watershed

Answer 24

area of land that drains into rivers and lakes, which, in turn, flow to a common outlet

Question 25

How does water compare to land or air when it comes to absorbing or releasing heat

Answer 25

Water absorbs and releases heat more slowly than land or air, making it better at regulating temperature

Question 26

How does a large body of water such as Lake Superior affect the climate of the surrounding land during the nighttime

Answer 26

At night, Lake Superior releases stored heat, warming the surrounding land and making nearby areas cooler by day and milder by night compared to regions farther inland.

Question 27

How old is the earth according to scientist and what types of changes have occurred over its life time

Answer 27

According to scientists, the Earth is about 4.54 billion years old. and has experienced dramatic climate shifts over time—including ice ages, periods of extreme heat, and recent human-driven global warming.

Question 28

What do scientists believe are causing the rise in temperature on earth

Answer 28

Scientists say rising temperatures are mainly caused by greenhouse gases from burning fossil fuels.

Question 29

When mountain glaciers and ice sheets increase and decrease in size how does it affect the earth

Answer 29

When mountain glaciers and ice sheets grow or shrink, they affect sea levels, climate patterns, and the Earth's surface by either storing or releasing water and changing how sunlight is reflected.

Question 30

Heat Capacity:

Answer 30

Heat capacity is the amount of heat energy needed to raise the temperature of a substance by a certain amount

Question 31

Microclimate:

Answer 31

A microclimate is the climate of a small, specific area that can be different from the surrounding region.