Physical Science
What is the smallest unit of matter?
atom
Which pathogen is nonliving and requires a host cell to reproduce?
Virus
What is a living factor in an ecosystem called?
biotic or biotic factor
What do fossils provide evidence of?
Past life and environments
What is the continuous movement of water on Earth?
water cycle
What information does the atomic number tell you about an element?
What type of medicine is used to treat bacterial infections?
Antibiotics
What roles does a producer play in a food chain? (2 things)
Makes it's own food AND provides energy for other organisms.
In undisturbed rock layers, where are the oldest rocks found?
Bottom layers
Which is more dense: cold saltwater or warm freshwater
An element on the far left side of the periodic table would be:
Metal
A fungus spreads using tiny airborne structures. What are these structures called?
Spores
Example of parasitism
answers may vary
What is the purpose of an index fossil?
To determine the relative age of rock layers
How can increased turbidity affect aquatic organisms? (2 things)
Less sunlight to reach plants, decrease in oxygen levels
On the periodic table, describe Group 1 reactivity
the most reactive
Why can overusing antibiotics be harmful?
lead to antibiotic resistance
Quick energy source
Carbohydrate
Why would a marine fossil found on a mountain be evidence that Earth has changed over time?
The area was once underwater
Why do differences in temperature and salinity create ocean currents?
They change water density
Magnesium easily reacts, while Neon rarely reacts. Where are their positions on the periodic table?
Magnesium is on the left side closer to Group 1.
Neon is on the right side closer to Noble Gases.
What medicine can be used to treat the flu?
Influenza can not be treated, it is a virus
How does a food web provide more stability than a food chain?
Organisms have multiple food sources
Two rock layers in different locations have the same index fossils, what does the mean?
The rock layers are the same age
Explain how water pollution can impact both aquatic organisms and humans? (3 things)
reduce water quality, harm organisms, and contaminate drinking water/food sources