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Chemistry
Stars
Earth, Moon, and Sun
Weather
Ecology
100
NaNO3 is an example of a chemical __________. a. equation b. formula c. reaction d. symbol
What is "b. formula"?
100
The coolest stars are what color?
What is "red"?
100
For Earth, one revolution around the sun takes about __________ days.
What is "365.25"?
100
The three types of heat transfer are...
What are "convection, conduction, and radiation"?
100
What energy role is the grass in your lawn?
What is "producer"?
200
Litmus paper is dipped into drain cleaner and changes color. As what color did it start?
What is "red"?
200
Light from a star 66 light-years away has been traveling for how long before it reaches your eye?
What is "66 years"?
200
If Earth and Venus switched positions, one year on Earth would be expected to be ______________. a.) longer b.) shorter c.) the same
What is "b. shorter"?
200
Which type of heating is primarily responsible for the heating of the troposphere?
What is "convection"?
200
All of the abiotic and biotic factors needed for a living thing to survive make up its ____________.
What is "habitat"?
300
A very basic solution would be expected to have a high concentration of ______________ and a low concentration of ____________.
What is "hydroxide ions" and "hydrogen ions."
300
In what way is the size of the universe changing over time?
What is "expanding"?
300
A spring tide occurs during which phases of the moon?
What are "new moon" and "full moon"?
300
The percentage of air composed of oxygen should be __________ at the base of Mt. Everest than the percentage at the summit. a. lower b. greater c. the same d. much lower.
What is "c. the same"? Although the air is thinner/less dense on top of Mt. Everest and the air pressure is lower there, the PERCENTAGE of oxygen is the same.
300
Which group of organisms if removed from an ecosystem would cause the entire food web to collapse?
What are the "producers"?
400
The solubility of sucrose at 20 degrees Celsius is 204 g in 100 mL of water. Jack adds 103 g of sucrose to 100 mL of water at 10 degrees Celsius and heats it to 20 degrees Celsius. What term would you use to describe this solution?
What is "unsaturated solution"?
400
A star like our sun will form a ___________ upon its death. a. supernova b. hypernova c. planetary nebula d. red supergiant
What is "c. planetary nebula"?
400
What are the positions of the Earth, Moon, and Sun during a solar eclipse?
What is Sun --> Moon --> Earth?
400
Sea breezes occur because a.land cools off faster than water. b.land cools off more slowly than water. c.land heats up faster than water.
What is "c. land heats up faster than water"?
400
An owl eats a mouse that eats seeds. This makes the owl a ___________. a. primary consumer b. producer c. secondary consumer d. decomposer
What is "c. secondary consumer"?
500
Acid rain often damages statues over many years. From what category of compounds (except metals) do you think statues are made since they seem to react with acid rain?
What is a "carbonate"?
500
Using the concept of parallax allows us to estimate the distances of stars. If a star is relatively close to Earth, it's position in the sky should change ____________ from January to July. a. significantly b. almost none c. more than the moon d. absolutely none
What is "significantly"?
500
Your friend tells you that if you go outside, you will see an eclipse. You ask him if the eclipse is lunar or solar, but since he did not take Science 8 with Mr. Phillips, he does not know. You, however, remember that when you looked at the moon two days ago, it was in the waxing gibbous phase. What type of eclipse do you realize is occurring?
What is "lunar eclipse"? - If the moon was in the waxing gibbous phase two days ago, you know it should be a full moon shortly afterwards. Lunar eclipses occur during full moons, and solar eclipses during new moons. Thus, it must be a lunar eclipse occurring outside.
500
Why does the temperature increase as you go up in the stratosphere? a. the stratosphere is closer to the sun. b. the stratosphere is more dense than the other layers, so it traps more heat. c. chemical reactions in the ozone layer release heat. d. there isn't much atmosphere above it to capture the heat coming from the sun.
What is "c. chemical reactions in the ozone layer release heat"?
500
Which abiotic factor of the pine barrens do you think is most important in preventing an invasion of non-native plant species into the ecosystem?
What is "acidic, nutrient-poor soil"?