Patterns of the Universe
The path the Earth follows as it revolves around the sun is called...
Orbit
Worms, bacteria, mushrooms, and fungi are examples of...
Decomposers
True or False: Light travels in a straight line until it interacts with an object.
True
What is the loudness of a sound?
What is motion?
Moving or being moved
What best describes the sun when compared with most other stars?
It is average in size and temperature
In an ecosystem, birds depend on insects to survive. If someone spreads pesticide to control the insect population, which of the following is most likely to happen?
The bird population will decrease.
The bouncing of light is called...
Reflection
True or False: Sound cannot be heard under water
False
Define Force and give an example
Force is a push or a pull and is required to do work
One night while camping, a student observes that the moon and stars appear to move across the sky.
Why do the moon and stars appear to change position?
Earth is rotating.
A raccoon usually eats berries, insects, and small animals. A sheep usually eats grass and shrubs. A shark usually eats fish and other sea animals. Which of these three animals is an herbivore?
Sheep
The bending of light is called...
Refraction
You stretch a rubber band and pull on one side. The rubber band makes a sound. You stretch the same rubber band even more and pull on it again. It makes a different sound. What property of sound has changed?
Pitch
Define Gravity and give an example
Gravity is a force of attraction that pulls down towards the center of Earth or another body in space
What is the relationship between the Earth, the Moon, and the Sun?
The moon orbits around Earth, and Earth orbits around the sun.
Food Chain:
Sun --> Tree --> Caterpillar --> Bird --> Coyote
What would happen if the trees were cut down?
The caterpillar population would decrease
True or False: Light is best absorbed by smooth and shiny objects, like a mirror.
False
While learning to play the violin, Mrs. Brown discovered that she could change the pitch of the sound produced. How did she do this?
By tightening or loosening the strings.
Define Friction and give an example
A force that resists motion
The gradual change in the length of your shadow throughout the day is caused by...
The rotation of Earth on its axis.
How does energy flow through an ecosystem?
From the Sun to plants, then to animals, and finally decomposers
Light can change the temperature of an object because of...
Absorption
Students observe that the sound of their voices echoes in an empty classroom. They fill the room with soft objects like coats and backpacks and notice that the sounds of their voices change.
How will the sound of their voices change if the room is filled with soft objects?
The sounds will become quieter.
Define magnetism and list the 4 magnetic metals
The force of attraction to a magnet.
Magnetic Metals: Steel, Iron, Nickel, & Cobalt