In photosynthesis, what do plants use to make food?
Sunlight
100
Which is composed of matter?
A. Electricity
B. An atom
C. Light
D. Heat
An atom. This is the smallest unit of matter.
100
How do sounds and light travel?
In waves
100
Why does the moon have different phases?
The moon's position changes in relation to the sun and earth (it rotates and revolves)
100
Name all four layers of the Earth beginning with the center.
Inner core
Outer core
Mantle
Crust
200
What are the differences between decomposers, producers and consumers?
Decomposers: Animals that live in the soil that break down the soil into simple nutrients. WORMS!!
Producers: an organism that makes its own food; an organism that does not consume other plants or animals. PLANTS!!!
Consumers: an organism that eats other living things to get energy; an organism that does not produce its own food. HUMANS!!
200
What are the names of the three subatomic particles that make up an atom? BONUS: What are each of their charges?
Proton- Positive
Electron - Negative
Neutron - Neutral (no charge)
200
What is the relationship between eyesight and light?
Light reflects off an object and then enters the eye, allowing people to see the object.
What is the difference between rotation and revolution when it comes to the Earth?
The Earth rotates on its' axis. The Earth revolves around the sun.
300
A plant begins to bend when a tall building is near it. Why do you think this would happen?
It is growing toward the light source.
300
How are the atoms in an object affected when the temperature of the object increases?
How are the atoms in an object affected when the temperature of the object decreases?
They vibrate faster.
They vibrate slower.
300
What is the relationship between the electromagnetic spectrum and sight?
Visible light is the part of the electromagnetic spectrum that can be seen with the eye
300
What factor makes Earth different from all the other planets in the solar system in its ability to support life?
The Earth has a breathable atmosphere.
300
Why does the Earth have seasons?
Because the tilt of Earth on its axis as it moves around the sun.
400
What is the difference between a food web and a food chain?
Food web: a model that shows many different feeding relationships among living things
Food chain: a model that shows one set of feeding relationships among living things
400
What does sound travel the fastest through? (solid, liquid or gas AND WHY?)
Sound travels slower in air because of the increased distance between air particles SO sound travels faster in solids because of the decreased distance between air particles
400
How long does it take the Earth to complete 1 rotation? 1 revolution?