Chemistry
Systems
Optics
Climate
100

What number is Gold on the periodic table?

79

100

Which type of animal cell is able to divide into different types of specialized cells?

stem cells 

100

What type(s) of image does a diverging lens produce?

virtual 

100

What is the most likely cause of current climate change?

fossil fuels - coal, oil and gas

200

A substance that donates a pair of electrons to form coordinate covalent bonds is called?

Lewis base 

200

Which organelles are present in plant cells but not in animal cells?

cell wall, plastids, chloroplasts 

200

In which case does light bend toward the normal?

When light passes from a less dense to a more dense substance,

200

Which gasses are the principal contributors to the natural greenhouse effect?

Carbon dioxide (CO2)

300

 What is the pH of pure water?

7

300

What are cells that contain only half of the DNA from each parent called?

gamete 

300

What is the process by which materials that absorb light energy release light at a later time?

phosphorescence

300

How does ice influence Earth’s climate?

Changes in the amount of sea ice can disrupt normal ocean circulation, thereby leading to changes in global climate

400

What is the last group on the periodic table called?

Noble gases 

400

Which phase of mitosis is marked by chromosomes lining up along the middle of the cell?

metaphase

400

Where should you place an object in front of a converging lens to produce an inverted, real image that is the same size as the object?

 2F point

400

Why is it difficult for scientists to accurately predict future climate?

Because it is difficult to project far-off future emissions and other human factors that influence climate

500

What is the name of the compound with the formula H3PO4?

Phosphoric acid 

500

Which body systems work together to provide nutrients to all of your cells?

the circulatory system

500

Which medium has an index of refraction of exactly 1.0?



Air

500

How does deforestation affect the amount of carbon dioxide in the atmosphere?

When forests are cut down, much of that stored carbon is released into the atmosphere again as carbon dioxide (CO2). This is how deforestation and forest degradation contribute to global warming.N