Water Cycle
Water turns from a liquid to gas
Evaporation
Define the Law of Conservation of mass
No matter can be created or destroyed. Your initial mass must be equal to your final mass
What are the 3 states of matter?
Solid, Gas, and Liquid
Define producer and consumer
Producers create their own food by taking energy from the sun
Consumers eat producers and other consumers for food/energy
Mia is competing an experiment, and she wants to test how the type of floor impacts car speed. What variable is being changed in this experiment?
The type of floor
What is the source of energy that powers the water cycle?
The Sun
An experiment is done in a closed container. During the experiment 10 mL of ice were placed inside of the container, and melted. What is the final mass of the melted ice cubes? Explain your answer.
The final mass of the melted ice is 10 mL. The law of conservation of mass states that the initial and final mass must be equal. Also the experiment was completed in a closed container, which means the mass will be the same.
What happens to the molecules as the phase changes from gas to liquid?
The molecules lose energy
What is the primary source of energy in the food chain?
The sun
What tool would a scientist use to measure the temperature of water?
Thermometer
Name the steps to the water in cycle in order
Evaporation, condensation, precipitation, Surface run-off
3 substances are mixed in a closed container and a new substance is created. What must be true about the mass of the new substance?
The mass of the new substance must be equal to the mass of the original substance
Graduated cylinder A had an initial volume of 13 mL. The next day cylinder A had a final volume of 9 mL. What process occurred to cause the change in volume?
Evaporation
What is a decomposer?
Breaks down dead plants/ animals and returns their nutrients back to the soil.
What materials are needed for plant growth? Where do plants get the energy they need for growth?
Plants need air and water for growth. Plants get their energy from the sun.
If precipitation stopped what impact would it have on nearby producers?
Producers would die because they would not be able to grow due to lack of water
You mix 20 grams of sugar with 120 grams of water. You mix the water in a sealed container until the sugar is dissolved. What will the mass of the mixture be? Use units
140 grams
Although ocean water evaporates, it never dries up. Explain why.
Precipitation recycles water back into the ocean
Where do animals receive the energy needed to survive?
Plants
You mix two substances together and after mixing bubbles were created. What kind of reaction took place?
A chemical reaction
What happens to particles during evaporation? Describe particle movement and appearance
During evaporation liquid particles move far away from each, and become invisible to the human eye. Particles turn into gas.
28 grams of salt, 136 grams of water, and 56 grams of sugar are mixed in a container. What is the total mass of the mixture?
The total mass of the mixture is 220 grams.
Physical reaction occurs. A new substance is not being formed. A phase change is a physical reaction
What would happen to secondary consumers if primary consumers were removed from the food chain? Explain the transfer of energy
Secondary consumers would die because they do not have a food source. Secondary consumers eat primary consumers for food/ energy. If primary consumers are removed from the food chain, secondary consumers would not longer have a source of food.
What happens when heat is removed from a liquid?
It turns into a solid