Space
How many stars are in the solar system?
1, the sun
Give an example of how something that is NOT food, can be changed into matter that IS food.
Plants turn sunlight into food, decomposers turn decaying matter into food
Matter is neither created nor destroyed, we know this because of the _______________
Law of Conservation
Where is most of Earth's freshwater found?
Which direction does gravity pull objects on the surface of a planet?
Bonus: Name a planet that has stronger gravity than Earth
Towards the center of the planet
Jupiter, Saturn, or Neptune
Where does all energy in an ecosystem come from?
The sun
I accidentally washed the labels off of my kitchen containers. I can't tell which powder is flour, and which one is baking soda. What could I do to figure out which is which?
Combine them each with an acid, and see if they react. If it does, it is baking soda.
How much of Earth's water is freshwater?
Bonus: How much of this is drinkable?
3% is freshwater
1% is drinkable
Why does the sun appear so much brighter than other stars?
It is much closer to Earth
Is it possible for plants to grow without soil? If so, why is that possible?
Yes they can, plants get most of their nutrients from air, sunlight, and water, not the soil.
What is matter made of? Describe these.
Particles, they are too small to be seen
Give an example of 2 or more of Earth's spheres interacting
Wind (atmosphere) can shape landforms (geosphere) by erosion
Rain (hydrosphere) can wash away river banks (geosphere) during a flood
How can we use shadows to determine what season it is?
During the summer months, shadows are much shorter. In winter months, shadows are much longer.
On a food chain, who receives the most energy?
The bottom of the food chain. Producers receive energy directly from the sun. The further up the chain you go, the less energy the organisms receive.
I put pennies in a salt and vinegar solution to soak. Use the information to find the weight of the solution after the experiment
Before experiment: Pennies=14g, Solution=21g
After experiment: Pennies=11g, Solution= ?
24g
Geosphere, biosphere, hydrosphere, atmosphere
Why are some constellations only visible during certain seasons?
The Earth is at a different point in its revolution, showing different parts of the universe.
What are producers, consumers and decomposers? How do they all work together in an ecosystem?
Producers-make their own food
Consumers-must eat/consume something to survive
Decomposers-break down dead or decaying organisms
What does it mean that a chemical change creates a material with new properties? Give an example of a chemical reaction resulting in a material with new properties.
The substance created is not the same as the substance that was created.
Example: Before a campfire, the logs are solid, hard, and rough. After a campfire, the logs are ashy, powdery, and have changed color. They do NOT have the same properties
Give an example of how humans can use scientific ideas to protect the environment
Using water filtration systems to protect clean water
Using less fertilizers to prevent toxic runoff
Using recycling plants