Ecosystems and the Food Web
Water Cycle and Earth's Systems
Chemical Reactions and Properties of Matter
All the Little Details
rAndOM
100
Scientists think that Tyrannosaurus rex was able to run at a speed of 12 miles per hour. Where did T. rex get the energy that it used to run when it was alive? 
T. rex got its energy from eating Triceratops. Triceratops ate green plants and green plants got their energy from the Sun.
100
It just stopped raining and now the Sun is shining, which is causing the air to warm up. Alisha decides to go outside and jump in the rain puddles on the pavement of the playground. When she comes back to the playground the next day, she notices that the puddles have all disappeared overnight, even though the puddles couldn’t have soaked through the playground pavement.
How did the puddles disappear?
Water evaporates into the air.
100
Mia, Kayla, and Eli have all set up lemonade stands in their neighborhood. Each person started with the same amount of lemon juice and then added different amounts of sugar, as shown in the table below. What is the total weight of each person’s lemonade?
Mia: 210 grams
Kayla: 220 grams
Eli: 230 grams
100
Communities can protect the hydrosphere by reducing the runoff of these chemicals used on farm crops.
Fertilizers or pesticides
100
What is the world's longest river?
Nile River
200
Scientists think that the dinosaurs went extinct because an asteroid hit the Earth and created a giant dust cloud that covered up the Sun. Diego doesn’t think this explanation makes sense. He says, “Some dinosaurs ate other dinosaurs to get their energy. Why would removing the Sun cause the carnivores to go extinct?” Explain to Diego why carnivores would go extinct without the Sun.
Carnivores would go extinct without the Sun because all organisms’ energy can be traced back to the Sun. Herbivores need plants, plants need sunlight, and carnivores depend on herbivores.
200
The Earth can be thought of as four systems (land, air, water, and living things). Two of these systems interacting caused the puddles to disappear from the playground. Which two systems do you think they are? Describe how their interaction caused the puddles to disappear.
The two systems are the water and the air. The Sun shines and heats up the air. The warm air interacts with the water and the water evaporates into the air.
200
Sadly, Mia, Kayla, and Eli didn’t sell any lemonade. So they all decide that they will turn their lemonade into popsicles. All they do is take the lemonade they made the day before and freeze it. Choose True or False for each sentence below.
1. Eli’s popsicles will taste sweeter than Mia’s popsicles or Kayla’s popsicles because there is more sugar in them.
2. Eli’s popsicles will weigh slightly more than Mia’s popsicles or Kayla’s popsicles because there is more sugar in them.
3. Eli’s, Mia’s, and Kayla’s popsicles will all be exactly the same.
1. True
2. True
3. False
200
A student mixes sugar into water and notices the sugar “disappears.” Explain what really happened and what stayed the same.
The sugar dissolved, but the total mass stayed the same because the sugar is still there
200
What is the closest planet to the Sun?
Mercury
300
How would you connect the organisms of the forest ecosystem using arrows to create food chains?
Each arrow should point in the direction of how material (matter) travels in each food chain. For example, a squirrel eats acorns from an oak tree: "oak tree -> squirrel."
Which TWO combinations are correct?
squirrel --> hawk
cricket --> oak tree
earthworm --> robin
hawk --> dead leaves
squirrel --> hawk
earthworm --> robin
300
Jayden is trying to grow a flower garden in his town. He wants to grow two types of plants, Plant A and Plant B. Plant A has short, shallow roots and Plant B has long, deep roots. It hasn’t rained in a very long time in Jayden’s town. There is groundwater below the line shown in the picture above. Describe how each plant would or would not interact with the groundwater.
The roots of Plant A do not reach deep enough into the ground. Plant A cannot interact with the groundwater. The roots of Plant B absorb groundwater.
300
The picture below shows a sealed plastic bag filled with vinegar at the bottom. A cup of baking soda is about to mix with the vinegar. When the baking soda mixes with the vinegar, bubbles will form and the plastic bag will start to expand. Why does the bag expand?
Gas particles will push on the bag so it will expand and possibly explode.
300
This sphere includes all living things on Earth.
Biosphere
300
What kind of creature is Sebastian in "The Little Mermaid?"
Crab
400
Scientists are worried that a disease that kills oak trees will spread into this forest. What would happen to this ecosystem if all the oak trees suddenly disappear?
There are multiple answers. Choose ALL correct answers.
a. If there aren’t any oak trees, the squirrels will not have anything to eat. They will need to find another food source or they will not survive.
b. If there aren’t any oak trees, the robins will not have anything to eat. They will need to find another food source or they will not survive.
c. If there aren’t any oak trees, the hawks may not have anything to eat because the squirrels and robins may not survive.
All answers are correct
400
Jayden wants to plant more flowers in his garden, but he also wants to conserve water. He wants to choose plants that won’t need to be watered with a hose. Which plant, Plant A or Plant B, is a better option for Jayden’s garden? Why?
Plant B, because the roots are long and deep. The roots of Plant B are long enough to interact with the groundwater.
400
If two cups of baking soda are added to the vinegar in the bag, describe what would happen.
If more baking soda mixes with the vinegar, this will create more gas particles. With more gas particles inside the bag, they will push even more on the bag so it is much more likely that the bag will explode.
400
Communities settle near _____ to access underground water.
acquifers
400
Which sea creature has three hearts?
Octopus
500
Amir released some pet frogs into the forest ecosystem shown above. These frogs eat earthworms and crickets. Hawks, robins, and squirrels do NOT eat these frogs. What will happen to this ecosystem if the frogs start living here?
There are multiple answers. Choose ALL correct answers.
a. The dead leaves will pile up because the frogs will eat all the decomposers. The decomposers will not be there to eat the leaves.
b. The squirrels will not have anything to eat. They will need to find another food source or they will not survive.
c. The robins will not have anything to eat. They will need to find another food source or they will not survive.
d. The hawks will not have anything to eat. They will need to find another food source
a. and c.
500
Sara lives in a house near the ocean. Both the air near her house and the ocean are very warm. Choose the best answer for each letter to show how the ocean (hydrosphere) can interact with the air (atmosphere) to eventually bring rain to Sara’s yard.
a. evaporation
b. condensation
c. clouds
d. rain
500
Emi drops a cup of baking soda into a glass container that has vinegar at the bottom of it. Then, she quickly puts a balloon on top of the container. What do you predict will happen to the balloon?
The balloon will get bigger because it will become filled with gas particles that are too small to be seen.
500
Your paper airplane keeps diving straight to the ground. You decide to add a paperclip to the tail to see if it helps. If you want to know for sure if the paperclip was the fix, should you also change the wing shape at the same time? Why or why not?
No. (You should only change one thing at a time so you know which change actually fixed it.)
500
What year was TikTok launched?
2016
600
These organisms, such as fungi and bacteria, break down dead plants and animals and return nutrients to the soil.
Decomposers
600
If the ocean stays the same temperature, but the air above the ocean changes to become very cold, what do you predict will most likely happen in Sara's yard?
It would probably rain more in Sara’s yard because there will be more condensation.
600
If you freeze 100 grams of water into ice, the weight of the ice will be exactly this.
100 grams
600
While plants get energy from light, they get most of the actual material for body repair and growth from these two things.
Air and water
600
What is Mrs. Yoder's husband's name?
Grant Yoder