Scientific Inquiry
Earth Science
Space Science
Life Science
Physical Science
100
Andy determines the volume of a rock by using the water displacement method. What instrument did he use?
A graduated cylinder
100
Gneiss is a rock created when granite is exposed to heat or pressure. What type of rock is gneiss?
Metamorphic
100
A shooting star is actually a _________ (Give the scientific name)
Meteor
100
Birds follow army ants, because the army ants stir up insects that the birds eat.What sort of symbiotic relationship is this?
Commensalism, because the birds benefit while the army ants are neither harmed nor helped.
100
Which of the following is a renewable source of energy? Coal, Oil, Wind, Petroleum
Wind
200
Emma massed 50 g of vinegar and mixed it with 25 g of baking soda in an unsealed open beaker. She observed bubbles escape from the beaker. When the reaction was over, she noticed that the mass had decreased. The Law of Conservation of Mass states that mass cannot be created or destroyed. Why was there a change in mass?
Some of the gas escaped during the reaction. Gas has mass.
200
What type of plate boundary creates large nonvolcanic mountains?
Convergent
200
What would happen to the Earth's year if the Earth revolved faster?
The year would be shorter.
200
Which cell organelle is used to make proteins?
Ribosome
200
Victor went down a 19 meter toboggan chute screaming all the way.Where on the chute did he have the greatest kinetic energy?
At the bottom of the chute
300
After melting the wax on a candle, Donna notices that the wax floats in water. What INFERENCE can Donna make about the densities of wax and water?
Wax is less dense than water
300
What is the difference between erosion and weathering?
Weathering is the process by which materials (rocks) are BROKEN apart into sediments.Erosion is the process by which the broken sediments are TRANSPORTED elsewhere.
300
What causes the Earth to experience tides?
The moon's gravitational pull.
300
The heart, arteries and veins are organs that make up the __________
Circulatory System
300
Julian chops of some carrots and then eats them.In doing so, the carrots underwent two changes.Name those changes.
A physical change when he chopped up the carrots and then a chemical change when he ate them.
400
Johnathon made a 3 meter long ramp for his skateboarding endeavors. He began by making the ramp 25 cm off of the ground, and noted that it took him 3.5 seconds to travel the length of the ramp. He then raised it 50 cm high and noted it took him 2.7 seconds to travel the length of the ramp. His third trial was at a height of 75 cm. IDENTIFY the independent variable and PREDICT what will happen to Johnathon's time for his third trial.
-The independent variable is what "I" (the experimenter) changes. IN this case, it is the height of the ramp. -The data shows that his time should be less than 2.7 seconds which means his speed increases as the height of the ramp increases.
400
The top layer of some sedimentary rocks contained fossils of brachiopods.The bottom layer contained some trilobite fossils.If the rocks were untouched, which fossils are older AND give a scientific reason for your explanation.
The trilobites are older because they were found in the older later of rock.Untouched lower sedimentary rocks are older than the top layers.
400
The following shows the sun, moon, Earth alignment: SUN EARTH MOON What phase of the moon would we see and what sort of eclipse could occur?
It would be a full moon with the possibility of a lunar eclipse.
400
Below is a picture of a food chain: Grass-->Grasshopper-->Frog-->Snake-->Owl Recent water pollution has caused a decline in the frog population.EXPLAIN how this decline in the frog population will effect the grasshopper population.IDENTIFY what will happen to the snake or owl population as a result of the decrease in frogs.
-The number of grasshoppers will increase, because their are less predators eating them. -The number of snakes will decrease, because their are less frogs to eat. -The number of owls will decrease as a result of the decrease in snakes.
400
Identify TWO energy conversions that occur when wind turbines turn a generator, the generator runs electricity through electrical wires, the electrical wires run into a lightbulb.
-Kinetic energy from wind turbines converts into mechanical energy in the turbine. -Mechanical energy in the turbine converts into electrical energy in the wires. -Electrical energy in the wires converts to radiant energy in the light bulb. -Radiant energy in the light bulb converts to thermal energy.
500
Darrian wanted to know if his special soil nutrients made plants grow taller.He planted tomato plants in his back yard and soybeans in his greenhouse.The soybeans got his special nutrients and bottled water, while the tomoto plants got rain water with no nutrients.After two months the soybeans grew 3.7 cm taller than the tomato plants.Give two reasons why this experiment is invalid, and give two procedural steps to overcome these problems.
-He used different types of plants. -He used different types of soil. -He used different types of water. -Use the same plant. -Same soil -Same water -Only change one thing
500
A cold front is approaching Cleveland. EXPLAIN what the symbol looks like. Describe the weather conditions in terms of type of precipitation, type of cloud, and change in temperature as it passes over Cleveland.
The symbol is a blue line with blue triangles showing the direction the front is moving.Cumulonimbus clouds will bring heavy precipitation and Cleveland will experience a drop in temperature as it passes over.
500
Mike built a sandcastle at the shoreline. He leaves with his parents to grab some lunch. Upon his return, he notices the sandcastle has "vanished." The water has knocked it over. EXPLAIN why this occurred. DRAW AND LABEL the sun, moon, Earth, and its bulges if Mike built his sandcastle during a 1st quarter moon. NAME the type of tide.
-High tide came in and washed the sandcastle away. SUN EARTH MOON One high tide bulge faces the moon, while the other high tide bulge is on the other side of the Earth.
500
Hydra reproduce through a process called budding.In budding, the offspring grows out of the body of the parent.IDENTIFY what type of reproduction this is.EXPLAIN how the offspring will compare genetically to the parent.GIVE ONE ADVANTAGE of this type of reproduction.GIVE ONE DISADVANTAGE of this type of reproduction.
-This is asexual reproduction. -The offspring will be genetically identical to the parent. -ADVANTAGES:new harmful traits are not likely to be introduced since the offspring has the same genetic make-up • requires less energy • limits spread of harmful traits (detrimental characteristics) • provides genetic continuity • continues beneficial traits • limits occurrence of diseases -DISADVANTAGES: difficulties adapting to changes in environment, slow evolution, high extinction rates, difficult to remove bad mutations
500
Justin tries to move his tv stand to the other side of his room.He is pushing with 50 N of force west and encounters 3 N of sliding kinetic friction. CALCULATE the net force. DETERMINE if this net force is balanced or unbalanced. GIVE TWO WAYS in which Justin could make his job easier.
-NET FORCE = 50 N - 3 N = 47 N west -This is UNBALANCED. -He could put it on wheels, decrease some of the weight on the tv stand, put a lubricant on the floor, add another force pushing with him west.
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