Physical and Chemical changes
What are physical change and what is chemical changes?
What is a physical change is when the substance changes how it looks and a chemical change is when it creates a(n) new substance.
What is static electricity? What is human-harnessed electricity?
What is; Static electricity is when electric charge builds up on something, like when you rub a balloon on your hair or when you get shock from a door handle. Human-harnessed electricity is the kind we use in homes and buildings, coming from power plants and wires.
What are constructive and destructive processes?
What is a constructive and destructive processes are; constructive processes are those that build up Earth's surface, and destructive processes are those that break down Earth's surface.
What is a microorganism? What is a cell?
What is; A microorganism is a tiny living organism that can only be seen under a microscope. (Examples include bacteria, fungi, protozoa, and viruses.)
Cells are one of the smallest units of living things, they create the basic life of a larger living organism.
What is an inherited trait and what is an acquired trait?
An inherited trait is a trait the offspring was born with and an acquired trait is when you get something after you were born like a scar.
Why is burning paper a chemical change? Explain.
What is burning paper is a chemical change because the substance changes by the paper now becoming ash.
How are static electricity and human-harnessed electricity different?
What is; Static electricity doesn't flow as smoothly as human harnessed electricity, while human-harnessed electricity keeps flowing so we can use it anytime.
What is examples of constructive and destructive forces are deposition and weathering
What are the five parts of an animal cell?
What is; nucleus, cell membrane, cytoplasm, vacuoles, and mitochondria
There is a brown cow. What question can be asked to learn about the cow's inherited, physical traits?
A. How old is the cow?
B. Has the cow been fed?
C. Why does the cow have brown fur?
What is; C. Why does the cow have brown fur?
Imagine you are a baker and you make a cake. You mix the ingredients together, bake the cake, and decorate it. Which are physical changes and what part is the chemical change?
What is; the physical change is mixing the ingredients, and all the ingredients are still the same substance, and decorating the cake, the chemical changes are when baking the cake; changing the mixed ingredients into one substance.
How do people use static electricity in real life? How do people use human-harnessed electricity?
What is; static electricity is used in printers and air purifiers. People use human-harnessed electricity to power homes, businesses, and technology like computers and phones.
Some people who live in coastal areas along cliffs use drones to take pictures of neighborhoods. On December 18th, the cliff was near the building, on December 28th, the cliff was right under the building. What question can be answered by using a drone to observe recent changes?
A. How fast are the cliffs eroding?
B. How many people live near cliffs?
C. How old are the layers rock under at the bottom of the cliff?
What is; A. How fast the cliffs are eroding?
Compare beneficial and harmful microorganisms.
What is; Beneficial microorganisms help with processes like digestion, food production, and decomposition. Harmful microorganisms can cause diseases and spoil food. For example, E. coli can be harmful, while Lactobacillus is beneficial.
Is having green eyes a inherited or an acquired trait? Explain.
What is; having green eyes is an inherited trait because you got your eye color when you were born. The green eye trait was passed down from your parents and then given to the offspring.
Create a model or simulation to show how mixtures can be physically separated using different techniques like filtration, magnetism, and evaporation. How could this knowledge be useful in environmental science or industry?
What is; Use different materials (iron filings, sand, salt, water) to create a demonstration of separation. It is useful in environmental science or industry by; cleaning by evaporating water by filtering out impurities. separating useful materials in mining and recycling can be used as magnetism. The evaporation part to evaporate water in order to get what has dissolved in the water out.
Imagine you are designing a new machine that could be driven by electricity. Would you use static or human-harnessed electricity? Why?
What is; I would use human-harnessed electricity because it is more reliable and can power machines for a long time. Static electricity cannot provide steady energy, so it would not be good for running appliances.
Construct an argument using scientific evidence to explain how both constructive and destructive processes have interacted to shape a well-known surface feature, such as the Grand Canyon or a volcanic island. How do these processes continue to shape the landscape over time?
The Grand Canyon was formed by two big forces—weathering and erosion. Wind and rain also helped shape the canyon over time. Even today, weather, water, and small earthquakes continue to change its shape, showing how the Earth never stops moving and transforming
Ralphie started feeling ill at school one day. A lot of Ralphie had been diagnosed with the flu earlier in the week. The school nurse called Ralipie's parents, telling them he needed to go home so that the other students would not catch the flu from Ralphie. Could students "catch" the flu from Ralphie?
What is; Yes, students could catch the flu from Ralphie because the flu is contagious. When someone has the flu, they can spread it by coughing, sneezing, or even touching things that others use. If another student breathes in the germs or touches their face after touching something with flu germs, they could get sick too.
Imagine a flock of birds have long narrow beaks, while some other birds have short wide beaks. Over time, some changes were made in the environment and the birds with long narrow beaks now have short wide breaks. Which type of trait is this. Explain your answer.
What is; this is an acquired trait. It is an acquired trait because of changes in the bird's environment and not because it was passed on from the parent.
A student is investigating whether a change is physical or chemical. They observe the following; a solid substance is heated, it melts into a liquid, and then becomes a solid again when cooled. What conclusion can the student draw, and why?
What is; The student can conclude that the change is physical because the substance can return to its original state without creating new substances.
Describe the difference between the way static electricity and human-generated electricity (like from a power plant) move through matter, and explain why this difference makes static electricity impractical for powering a house while human-harnessed electricity is.
What is; Static electricity can’t power a house because it’s not a steady flow—but power plants create electricity that moves in a continuous electricity flow, which makes it useful for homes and buildings.
If we first learned that volcanoes are a destructive force; now that we learned that volcanoes are also constructive forces, how is that possible? Explain.
What is; the lava, when it dries, it builds up land and makes new landforms by injections lava. Which stays over time then creates mountains, islands, and even new sea floors. The landforms to the Earth's surface rather than taking away from the Earth.
Henry was sick and the doctor prescribed him antibiotics. After a week or two Henry was having stomach problems. Henry's doctor told him to eat yogurt and this would help. Why did Henry's doctor tell him to eat yogurt?
What is; Henry's doctor told him to eat yogurt because antibiotics can kill both bad bacteria and good bacteria in his stomach. Since antibiotics can kill the good bacteria, Henry's stomach started feeling upset. Yogurt has good bacteria that can help replace what was lost, making his stomach feel better again
Maura has the same color hair as her mother but not her father. She also has the same eye color as her father but not her mother. Is this possible? Explain your answer.
What is; this is possible because there would be 23 chromosomes from the mother and 23 chromosomes from the father. Which meant she had 23 things inherited from the mother and 23 inherited things from the father. Just like her having the same hair color of her father, and the same eye color of as her mother.