Space
What are the inner planets made up of mostly?
Rocks and soil
Where is most of Earth's water?
Oceans
What tool could you use to measure how heavy something is?
A scale
What gas in the air do plants use to make food?
Carbon Dioxide
Pollution in a river affects which organisms most?
All living things in the water
What is the nickname for the outer planets.
Gas Giants
What might happen to the biosphere if the air in the atmosphere gets polluted?
Name at least two properties you can use to describe a material?
Color, hardness, texture, size, shape, and whether it can bend or break.
What do plants take in through their roots to help them grow?
Water
What happens when a plant dies?
Decomposers return its matter to the soil
Name the inner planets in order starting with the one closest to the sun.
Mercury, Venus, Earth, and Mars
Name one way your school helps protect the environment.
Recycling paper
Can you see the particles that make up air? Why or why not?
No, because the particles are too small to see with our eyes.
What do decomposers do with dead plants and animals?
They break them down and return the matter to the soil.
Which group starts the movement of energy in most food chains?
Name the outer planets in order starting with the one closest to the sun.
Jupiter, Saturn, Uranus, and Neptune
How can planting trees help the environment?
Trees clean the air, provide oxygen, and prevent soil from washing away.
If you mix two substances and gas escapes, will the total weight change?
Yes, the total will decrease
Why is it important that decomposers return matter to the soil?
So plants can use it again to grow, keeping the cycle going.
What happens if all the rabbits in a forest die?
Predators will decrease
Which movement of Earth is responsible for the seasons.
Revolution
Why does a feather fall slower than a rock?
Air resistance is a force that pushes against objects moving through the air. We can feel it when we ride a bike fast or when something falls.
How can you tell if mixing two substances creates something new?
You might see bubbles, color changes, heat, or a new solid
What part of the plant takes in carbon dioxide from the air?
What is the difference between a population and a community in an ecosystem?
a population refers to all the individuals of the same species living in a specific area, while a community is the collection of all different species living in that same area