Web of Life
What two substances make up most of the mass in plants?
air (carbon dioxide) and water
Name the planets in order, starting at the sun.
What are the three components of the water cycle?
precipitation, condensation, evaporation
What two substances turn dull pennies into shiny pennies?
Salt and vinegar
How many continents are there on Earth?
7
What is the original source of energy for all plants and animals?
The Sun
What is our solar system's only star?
The Sun
What causes water droplets to form in the sky/clouds?
Warm air rises and cools off
Ava conducts an experiment to turn dull pennies into shiny pennies. She dips the pennies in vinegar and salt and they turn shiny. How can Ava prove that the dull layer was removed from the penny?
Ava could weigh the pennies before and after the experiment. If the dull layer was removed, they should weight less AFTER the experiment.
What temperature does water freeze?
31 degrees farenheight
0 degrees celcius
If giant dust clouds covered up the sun for many years, how would herbivores be effected?
Herbivores eat plants. If the sun is blocked, then plants won't be able to grow. Therefore, herbivores would not have anything to eat and probably become extinct.
Can you jump HIGHER or NOT AS HIGH on a planet that has a smaller mass than Earth?
You would be able to jump HIGHER if you were on a planet with less mass than earth because the smaller the planet, the less gravity it has to pull you down.
What causes evaporation?
Heat/the sun
What causes things to explode? Give an example of an explosion.
A build up of gas molecules.
Examples: fireworks, vinegar/baking soda, dynamite, etc.
How many noses does a slug have?
4
What is a carnivore's main source of energy?
Meat. Carnivores eat meat for energy.
What is the special term for planets that are habitable because their oxygen, size, temperature, and sunlight are just right?
The Goldilocks Zone
What percentage of Earth's water is freshwater?
3%
How do you know a chemical reaction has occurred?
A brand new substance is made. You might see color change, bubbles, or burning.
What is the only animal that can't jump?
ELEPHANT
What is the role of decomposers? Ex: worms, mushrooms, fungi
The role of decomposers is to break down materials and put nutrients back into the soil to help plants grow.
Which direction does gravity pull on objects?
Downward/Toward Earth
What are two ways a town could prevent flooding after a hurricane?
wetlands, houses on stilts, levees, seawalls
Are all acids dangerous? Explain.
No. Acids can be strong or weak. We are able to eat some acids such as vinegar, orange juice, lemon juice, etc.
How many bones are in the adult human body?
206