Physical science
How many cycles per second in a wave.
What is frequency?
Dot-like structures in the cell that produce proteins.
What are ribosomes?
The earth is tilted on its _________, and due to this and the motion around the sun, we have the seasons.
What is axis?
A proposed explanation for a phenomenon or observation that can be tested through experimentation or further investigation.
What is hypothesis?
Electric current is the movement of this around a wire.
What are electrons?
The process by which organisms better adapted to their environment tend to survive and reproduce more successfully, passing on their traits.
What is natural selection?
Earth's oceans tend to heat up __________ than land, which causes moderate climates in coastal regions.
What is slower?
In order to filter particles such as iron or nickel filings from a mixture, you can use this.
What is a magnet?
When work is done on a system, this of the system changes.
What is energy?
These are at the bottom of food webs (ignore decomposers).
What are primary producers?
Certain human activities release large amounts of greenhouse gases into the atmosphere. Releasing the gas does this to heat in earth's atmosphere.
What is trap?
The expansion of matter when it is heated is known as this.
What is thermal expansion?
As the height of an object increases relative to the earth, its ___________ energy also increases.
What is potential energy? (Specifically, gravitational potential energy)
The body's ability to maintain a stable internal environment despite external changes, ensuring optimal conditions for survival.
What is homeostasis?
The correct order for: galaxy, solar system, sun, universe, galaxy cluster.
What is sun, solar system, galaxy, galaxy cluster, universe.
This process removes salt and minerals from saltwater to make freshwater.
What is desalination?
This signal is a 1 or a 0.
The other signal is a continuous stream between a range of values.
What is a digital signal?
What is an analog signal?
An environment that provides the things a specific organism needs to live, reproduce, and grow.
What is a habitat?
A ___________ resource is either always available or is naturally replaced in a relatively short time.
What is renewable?
The ultimate source of energy on our planet comes from this.
What is the sun?