When cooled to 0 degrees celsius this becomes a solid. When heated to 100 degrees celsius it becomes a gas.
What is water?
100
This is the star closest to Earth.
What is the Sun?
100
This is a material or resource that cannot be replaced by natural means at a level equal to that at which it is consumed. Examples include iron ore, natural gas, and gold.
What is a non-renewable resource?
100
This is the tool that would best be used to measure the length of an object?
What is a ruler?
100
Wear these to keep your eyes safe from laboratory chemicals. (7 letters)
What are goggles?
200
A glass filled with ice has a total mass of 250 grams. When the ice melts, what is the total mass of the glass and water?
250 grams
200
This is responsible for day and night on Earth.
What is the Earth's rotation on its axis?
200
A rapid change is one that causes immediate irreversible change to the surface of the Earth. List three examples of rapid changes.
What is earthquake, volcano, typhoon, tsunami, tornado, etc.?
200
This is a tool that could be used to measure the volume of a liquid mixture.
What is a graduated cylinder, beaker or measuring cup?
200
A type of igneous rock, it is formed through the cooling and solidification of magma. (7 letters)
What is granite?
300
To change a solid to a liquid, what must you do?
Heat it / increase the temperature
300
These four planets are characterized by thick atmospheres, warm temperatures, and rocky surfaces.
What are the inner planets (Mercury, Venus, Earth and Mars)?
300
In an ecosystem, birds depend on insects to survive. What will happen to the bird population if people spray pesticides to control the insect population?
What is a decline in the bird population?
300
This could be used to separate metal shavings from salt.
What is a magnet?
300
Aa unit of measure or mass. 28 of them is equal to 1 ounce. (4 letters)
What is the gram?
400
This occurs when baking soda and vinegar are mixed?
What is a chemical change?
400
This is responsible for the moon revolving around the Earth.
What is gravity?
400
List three ways in which humans have caused a decline in the blue crab population of Maryland.
What is overharvesting (crabbing), habitat loss, pollution?
400
This is a tool used to transfer small amounts of liquid. (We used it to place water droplets on a coin.)
What is an eyedropper?
400
The milky way is one? (6 letters)
What is a galaxy?
500
When iron is exposed to oxygen and water over a long period of time, a chemical change occurs creating this?
What is rust?
500
Why is the constellation Canis Major only visible to Marylanders in the winter?
What is the Earths revolution around the sun?
500
During the 1980s, zebra mussels were introduced to the Great Lakes region from Russia. The mussels are responsible for the near extinction of many species in the region and billions of dollars in damage. The zebra mussel is an example of this type of species that is non-native (or alien) to the ecosystem under consideration and whose introduction causes or is likely to cause harm.
What is an invasive species?
500
A pan or double balance is used to accurately measure this physical property of materials.
What is mass?
500
A large body of dense ice that erodes the surface of the Earth?