Unit 1 - Experimental Design
Unit 2 - Matter and Its Changes
Unit 3 - Law of Conservation
Unit 4 - The Cycling of Matter
Unit 5 - The Earth's Systems
100
What is a prediction for an experiment called?
hypothesis
100
Name the three states of matter.
solid, liquid, gas
100
What is the Law of Conservation of Mass?
Mass cannot be created or destroyed
100
What is the primary source of energy?
the sun
100
What are the four spheres of the Earth?
geosphere, atmosphere, biosphere, hydrosphere
200
What term matches this definition:
what the scientist changes during an experiment
independent variable
200
When adding thermal energy to a liquid, what phase change occurs?
evaporation
200
Hector measured 20 grams of sugar and added it to his 290 grams of tea. What is the final mass of Hector's tea? Show your work!
20 grams + 290 grams = 310 grams
200
What are the three things needed for photosynthesis?
carbon dioxide, water, sunlight
200
What process is happening in this gif?
Weathering because the rock is breaking down into smaller pieces
300
What is the independent variable in the statement below?
Edy chewed different types of gum to see how it affected the size of the bubbles.
Types of gum
300
Define "condensation"
thermal energy is removed from a gas to become a liquid
300
Rosie made chocolate covered strawberries for 5 of her friends. Rosie melted 250 grams of chocolate, then she split it evenly for five strawberries. Each strawberry has a mass of 425 grams. What is the mass of one chocolate covered strawberry? Show your work!
250 grams chocolate / 5 strawberries = 50 grams of chocolate per strawberry
425 gram strawberry + 50 grams of chocolate = 475 grams chocolate covered strawberry
300
What is the role of the lion in the food chain below?
secondary consumer
300
Is this showing weather or climate? Explain.
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Weather because it shows the weather conditions over a short period of time.
400
What is the independent variable in the picture below?
Drops of fertilizer
400
What phase change is #1, and is thermal energy added or removed?
melting, thermal energy is added
400
Your grandma is making soup for dinner. She started with 2 L of water. When she is finished, there is only 1.5 L of water in the pot. Your grandma says the water disappeared. Is she correct?
No, she is incorrect. The other 0.5 L of water evaporated into the air as water vapor.
400
One summer, all the trees in the area were burned down because of a large wildfire. Explain what will happen to the bee population.
The bee population will decrease because they have one less source of food to get energy from.
400
What is the largest amount of water type on Earth: saltwater, freshwater, or frozen freshwater? Team that is closest to the correct percentage wins!
500
What is the outcome of this experiment? Provide one piece of evidence to support your claim!
When you add water to a plant, it grows more. The plant on the left grew taller because it received more water.
500
Give a real-life example of phase change #3.
- Boiling a pot of water
- A puddle evaporating on a hot day
500
Faith added 15 grams of baking soda to 30 grams of vinegar and placed a balloon on top of her mixture. When Faith removed the balloon, the final mass of the mixture was 40 grams. What happened to the other 5 grams?
When the baking soda and vinegar mixed, a gas was formed. The mass of the gas was 5 grams, and it's inside the balloon.
500
Below is a food web from a forest ecosystem. If all the mice are wiped out, how will this affect the birds population?
The birds population will increase because the birds and mice eat the same food. With the mice gone, there is more food available to eat and gain energy from. The birds can create more baby birds with the extra food.
500
Using the information from the passage below, identify two spheres that are interacting with each other . Then create a model that correctly shows and explains how these two spheres interact.
Seattle, Washington is a city on the coast of the Pacific Ocean in the northwest corner of the United States. It rains at least 150 days each year in Seattle! Yesterday, the lowest temperature in Seattle was 32oF, and there was light snow. Rain or shine, the shops and stores are always open in Seattle!
Answers will vary, but possible interactions include:
- hydrosphere (ocean) and geosphere (Seattle coast)
- hydrosphere (rain/snow) and atmosphere (air temperature causing the rain/snow)