To which group of elements in the periodic table to neon and other nonreactive elements belong?
What is noble gases
100
Where on Earth’s surface does most evaporation occur and most precipitation fall?
What is oceans
100
Large groove in the bottom of the ocean.
What is a trench
200
The variable that responds to the independent variable.
What is the dependent variable
200
In the follwoing list of mass measurements, which is the median?
2.0 g, 2.8 g, 3.9 g, 4.3 g, 5.1 g, 5.8 g, 6.3 g, 6.7 g, 7.5 g
What is 5.1
200
Metalloids are used to make semiconductors because
What is they sometimes carry a current, but other times do not.
200
How can water be scarce when almost three-fourths of the Earth is covered by water?
What is most earth's water is salty
200
smaller rivers enter larger rivers
What is tributaries
300
To avoid accepting a faulty idea, a scientist’s open-mindedness should be balanced by
What is skepticism
300
The beaker has a mass of 32.310 g. You then put a mixture of sodium bicarbonate into the beaker and the new mass is 35.324 g. What is the mass of the sodium bicarbonate in the beaker?
What is 3.014 g
300
When the neutral atom gains an electron, it becomes a
What is negative ion
300
How do humans cause or increase eutrophication?
What is Fertililzer from farms runs off into ponds and lakes.
300
The total amount of dissolved salts in a sample of water is called
What is salinity
400
Rafa had observed that thunderstorms often occur on hot summer days. He asks the question, “How does temperature affect the formation of a thunderstorm?” What is the first step he should take to answer the question?
What is research what is already known about the topic.
400
In a gas oven, when the temperature measured by the thermostat reaches a set value, the thermostat switches off the oven. This action by the thermostat is an example of
What is feedback
400
A covalent bond in which electrons are shared equally is
What is nonpolar
400
What is one way a pond is usually different from a lake?
What is Ponds are shallow enough for sunlight to reach the bottom
400
These orbit around the nucleus of an atom
What is electrons
500
When heavy rains occur while apple orchards are in bloom, the apple crop the following fall is much smaller than normal. Which kind of information is this?
What is an observation
500
In a chemical reaction, the total mass of the reactants is
What is equal to the total mass of the product
500
This type of change occurs when bonds break and form new ones.
What is chemical (results in new products)
500
Water turns from a liquid state to a gaseous state