Traits and heredity
Permanent changes to DNA are called__________.
Mutation
When two magnets move towards each other
attraction
Explain what the direction of arrows means in a food web.
The arrows show the direction of energy in a food web
What is the smallest piece of matter that has the properties of an element?
an atom
Name a Greenhouse gas that traps heat in the atmosphere.
Carbon dioxide
Water Vapor
Methane
How can mutations cause changes in an organisms traits?
A change in DNA= and change in traits
When two magnets move away from each other
repel
Explain the role of producers and consumers in a food web
Producers take energy, mostly from the sun, and turn them into food, for consumers to eat
Give two potential pieces of evidence for how you know a chemical reaction has taken place
temperature change, bubbles
What Causes Earth's seasons?
Tilt of Earth's axis
Name an animal who has traits that are best suited to the Arctic.
Polar Bear
Caribou
Arctic fox
Arctic wolf
Why do magnets attract things even if they are not touching
because a magnetic field surrounds the magnet
Where are the producers in a food web? Where are the apex predators?
Producers are at the bottom in a food web. Apex predators are at the top of a food web
Using the words "potential energy" and "kinetic energy," explain what happens when a ball falls off a high shelf
When the ball is on the shelf, it has potential energy, and as it falls, that potential energy is converted into kinetic energy.
How do greenhouse gases warm the atmosphere?
They trap heat
How do both harmful and beneficial traits affect survival in an environment?
Beneficial increase chances of survival
harmful reduce chances of survival
The more magnets we add together the _________ the magnetic field.
stronger
What is the role of decomposers in a food web?
Decomposers break down dead organisms to recycle the matter into the ground, providing nutrients for the producers
Using the words "potential energy" and "kinetic energy," explain what happens when a ball falls off a high shelf
When the ball is on the shelf, it has potential energy, and as it falls, that potential energy is converted into kinetic energy.
Where do greenhouse gases come from?
Burning fossil fuels
If a new predator enters a mostly green colored environment, who would have a better chance of survival? A grasshopper or a lady bug?
Grasshopper, it blends in better.
the closer two repelling magnets are pushed together the more _______ ________ is stored.
Potential energy
In a food web, how do we know which organisms compete with each other?
Organisms that are next to each other (are on the same "level") compete with each other. They also both eat the same organisms
Give an example of a chemical change
Rust
Why is sunlight more concentrated at the equator
The curve of the Earth's surface