Math
Chapter 1
Chapter 1
What is 18 × -3?
-54
Convert 0.5 into a fraction.
5/10
−20 ÷ −4
5
This term refers to anything that has mass and takes up space, and it makes up all living and nonliving things.
Matter
This process takes place in chloroplasts and uses sunlight to turn carbon dioxide and water into sugar and oxygen.
Photosynthesis
This is the process of breaking down rocks into smaller pieces without changing their chemical composition.
Weathering
This shows how matter is recycled as rocks change between igneous, sedimentary, and metamorphic forms over millions of years.
The Rock Cycle
What is 45 ÷ 15 − 2?
1
What is the fraction form of 0.76? Simplify.
19/25
−9 ÷ −3/2
6
These organisms, like plants and algae, use energy from the sun and matter from their environment to make their own food.
Producers
What are the three most important nutrients for the body?
Carbs, fats, and proteins.
This type of weathering occurs when chemicals like acids or oxygen react with minerals in rocks, changing their composition.
Chemical weathering
This process explains how sedimentary rock forms when layers of sediment are pressed together and glued by minerals over time.
Compaction and cementation
What is (−20) + 36 ÷ 6 × 5?
10
Write 8/12 as a decimal.
0.6 (6 repeating)
You owe $9 and split the debt equally among 1.5 people. How much debt does each person take on?
$6
The process by which decomposers break down dead material and return nutrients to the environment.
Decomposition
What do we call the starting substances/materials in a chemical reaction?
What do we call the resulting subtances/materials?
Reactants
Products
The movement of weathered materials from one place to another by wind, water, ice, or gravity is known as this process.
Erosion
This type of igneous rock forms when magma cools slowly underground, creating large, visible crystals.
Intrusive igneous rock
Create a math expression you would use to solve this word problem, then answer.
A submarine is 30 meters below sea level. It rises 18 meters, then dives down 25 more meters.
-30 + 18 - 25
Final Depth: 37 meters below sea level (-37)
What is the decimal form of 7/30?
0.23 (3 repeating)
A submarine descends 3 meters each minute. What is the change in depth after 4 minutes?
-12
This is the ability to cause change, and organisms use it to move, grow, and carry out life functions.
Energy
This process takes place in the mitochondria and releases usable energy from sugars using oxygen.
Cellular respiration
When sediments carried by wind or water are dropped in a new location, this process has occurred.
Deposition
These conditions change existing rock into metamorphic rock without melting it.
Heat and pressure
A hiker starts at a base camp that is 50 meters below sea level. She climbs up 120 meters to a ridge, then hikes down 3 times the height of a 15-meter hill. After resting, she climbs back up half of that distance. What is her final elevation relative to sea level?
Final Elevation: 47.5 meters above sea level
Can a number that goes on forever, like pi, be considered a rational number?
No, rational numbers can be written as a fraction or a decimal that repeats or terminates.
A hiker loses 3 miles of elevation spread evenly over 2.5 miles. What is the change in elevation per mile?
-1.2
In aany animal, this element makes up the highest percentage by mass, largely because it's a major part of water.
Oxygen
What is the law of conservation?
Matter cannot be created or destroyed, only recycled.
This natural force is responsible for rockfalls, landslides, and helping water and ice move sediment downhill.
Gravity
This energy source inside Earth causes rock to melt into magma and later cool into igneous rock.
Earth's interior energy