Water Cycle (a)
Water Cycle (b)
Water Cycle (c)
Law of Conservation of Mass
Food Web
100
Gas particles lose heat energy and turn into liquid particles forming a cloud. What stage of the water cycle is this?
condensation
100
When liquid changes into a gas, which stage of the water cycle is this?
evaporation.
100
What is the sun doing to the ocean?
What is heating up the water and changing it to a gas.
100
True or False
Mass cannot be created or destroyed during a physical change only. The initial and final mass are equal.
False. The Law of Conservation of Mass applies to both chemical and physical changes.
100
What is the primary source of energy for all ecosystems?
The sun is the primary source of energy
200
When water flows over the Earth's surface and gathers in lakes, oceans, and streams. What stage of the water cycle is this?
runoff
200
Gas changes to a liquid. Which stage of the water cycle is this?
What is condensation.
200
Which phase change, changes rain into snow.
What is freezing.
200
Jayla mixes 3grams of salt with 19 grams of water. What is the final mass?
22 grams.
200
Which organisms take energy directly from the sun for energy? Must use the scientific name for the organisms.
Producers.
300
Name the four forms of precipitation.
What is rain, hail, sleet, and snow.
300
How are clouds formed?
Gas particles lose thermal energy and turn into liquid particles. The liquid particles gather together and form a cloud
300
During which stage of the water cycle are clouds formed. Explain answer.
Clouds are formed during the stage of condensation. Gas particles lose thermal energy and turn into liquid particles. The particles form together and make a cloud
300
Jessica has a bottle of ice and leaves it on the counter overnight and noticed that it melted. Will the mass of the substance increase, decrease or remain the same? explain
The mass of the ice would be the same. A phase change occurred, but it is still the same substance and the same amount
300
What are decomposers? Give an example of a decomposer.
Decomposers recycle nutrients from dead organisms back into the soil. Example: mushrooms, fungi, earthworms, etc.
400
Thermal energy from the sun cause liquid particles to turn into gas particles. What stage of the water cycle is this?
evaporation
400
What is the primary source of energy in the water cycle?
The sun
400
What type of change( physical or chemical) occurs during the evaporation stage of the water cycle? explain
A physical change occurs because no new substance is being created. A liquid turns into a gas
400
Jordan is completing an experiment and mixes 10 grams of a baking soda with 83 grams of vinegar. What is the initial mass of the substances and the final mass after the substances are mixed? Explain.
The initial mass is 93grams and the final mass is 93 grams. The LOCM states the initial and final mass are always equal
400
In an ecosystem, mice eat plants for energy. The mouse is eaten by the fox and the fox is eaten by the bear. Name the producer, primary, secondary and tertiary consumer in this ecosystem.
Producer= Plant
Primary consumer= mouse
Secondary consumer= Fox
Tertiary consumer= bear
500
During the phase change of evaporation, the amount of water on earth appears to decrease. Why?
Liquid particles turn into gas particles and rise into the atmosphere.
500
How would primary consumers be impacted if precipitation stopped occurring?
Primary consumers would not have a food source because producers need precipitation for growth. Without it, the producers would die and the primary consumers would decrease/die
500
True or False, must explain!
During the phase change of evaporation, liquid particles gain heat energy, move closer together and sink to the bottom of the ocean.
False, the particles move further apart and rise into the atmosphere
500
Christopher mixes two unknown substances. The first substance is 15 grams and the second substance is 39 grams. Once mixed, he notices a color change, burning and a fizzing sound. What is the initial and final mass of the mixture? Did Christopher experience a physical or chemical change and why?
The initial mass is 54grams and this a chemical change. The color change, burning and fizzing sound indicate that a new substance is being created which is a chemical change
500
In an ecosystem, mice eat plants for energy. The mouse is eaten by the fox and the fox is eaten by the bear. How will the fox be impacted if all mice are removed from the ecosystem? Must include the transfer of energy.
The fox will decrease because they will lose their food source. Foxes get their energy from the mice, so if the mice are gone, the fox will not have any food.