Life Science
What are the stages of the water cycle?
Evaporation, condensation, precipitation, collection, and transpiration
Explain density. Why do some things sink and others float?
Density is a measure of how tightly packed matter is in a space.
Objects with high density sink, while low-density objects float.
Describe Deep ocean currents and what do they do?
Deep ocean currents are like underwater rivers- they move water all around the world.
These currents move water masses through the deep ocean, taking nutrients, oxygen, and heat with them.
What are 3 effects of puberty and why is puberty important?
Hormones, Sebum, Acne, Emotional, Sweating, Growing.
God designed us this way to grow up, be more mature, and to become an adult.
Explain the life cycle of a Salmon.
They are born in freshwater, live in the ocean, and return to freshwater to lay eggs.
Redd (Salmon nest), Alevin (Baby), Parr (Young), Smolt (Juvenile), Adult
Describe the differences between Physical changes and Chemical changes. Give an example of each.
A physical change happens when matter changes its appearance but not its substance.
Ex.: Melting Ice
A chemical change creates a new substance with new properties.
Ex.: Baking a cake
What are the differences between Renewable and Nonrenewable? Give an example of each.
Renewable resources can be replaced or regrown.
Ex: Sunlight, wind, trees
Nonrenewable resources cannot be easily replaced.
Ex: Coal, oil, natural gas
What is homeostasis and give an example.
Homeostasis means your body works to keep things balanced.
Example: to keep it at the right temperature if you are hot or cold, change your water level, getting cut and healing itself.
Name and describe 3 parts of a cell.
The cell membrane is like a fence around the cell.
Cytoplasm is the jelly-like fluid inside cells.
Plant cells have a cell wall outside their membrane.
Name 4 different simple machines and describe what they do.
1. Wheel and axle: helps things roll (like on a bike)
2. Pulley: lifts things using a rope and wheel
3. Wedge: splits things apart (like an axe)
4. Screw: holds things together or lifts objects
5. Inclined plane: a flat surface set at an angle
What are Trade Winds, Westerlies, and Polar Easterlies.
Why are they important?
Trade Winds: Blow from east to west near the Earth's equator
Westerlies: Winds that blow from west to east
Polar Easterlies: Blow from east to west near the North and South Poles
They helped sailing ships travel across oceans
They bring warm, moist air to tropical regions
What are Infectious and Noninfectious Diseases? Give an example of both.
Infectious diseases: Can spread between people.
Example: Cold, flu, chickenpox
Noninfectious diseases: Cannot spread between people.
Examples: Diabetes, asthma, cancer
What is Ecological Succession?
The process of change in an ecosystem over time.
How plant and animal communities change.
Describe the difference between a series circuit and a parallel circuit. What would happen if a light bulb stopped working on each of them.
In a series circuit, current flows through one path.
If one part breaks, the whole circuit stops working.
In a parallel circuit, current flows through multiple paths.
If one part breaks, others can still work.
What are the 8 phases of the moon? Describe what they look like and how you can know the difference.
New Moon, Waxing Crescent, First Quarter, Waxing Gibbous, Full Moon, Waning Gibbous, Last Quarter, Waning Crescent.
Waxing: Right
Waning: Left
Gibbous: Big
Crescent: Small
What are 3 differences between a virus and bacteria?
1. Bacteria are treated with antibiotics while virus is prevented with a vaccine.
2. Example of bacteria: Strep throat/Cold
Example of virus: Corona Virus
3. Bacteria can live on surfaces, while viruses need a person to live in.