Properties of Matter
How does a mixture differ from a solution?
Mixtures keep their properties when put together while solutions change some of their properties. Mixtures can also be easily separated, while solutions can not.
During refraction, how does the image seen compare to the object observed?
When refraction occurs, light bends. As a result, the image appears different than the object. The image can appear bent, broken, large, or small.
What causes seasons? Explain.
Seasons are caused by Earth rotating on its tilted axis as it revolves around the sun.
Ducks and fish are both aquatic organisms. What structure of each organism allows them to move through water?
Ducks have webbed feet to move through water. Fish have fins and tails to move through water.
Explain why we see the color red on an apple.
The apple absorbs all the colors except red. The apple reflects the color red.
How can a combination of sand, salt, and iron filings be separated?
Use a magnet to separate the iron filings. Add water to the mixture to dissolve the salt. Use a filter to separate the sand. Use a hot plate to evaporate the water and separate the salt.
How does light travel?
Light travels in a straight line.
How does weather differ from climate?
The climate of a specific area includes long-term weather patterns over a long period of time. The weather in that same area can change from day to day.
Why are the abiotic factors in an ecosystem important?
Biotic factors need abiotic factors such as sunlight, air, soil, and water to survive.
Explain the apparent motion of the sun.
The sun appears to move across the sky from east to west due to Earth's 24 hour rotation.
A student has four substances. How can the student determine which substance has the greatest density?
The student can add the substances into a cup of water to determine which one sinks.
How does a conductor differ from an insulator?
A conductor allows electrical and thermal energy to flow through it, while an insulator does not.
What causes water vapor to condense into a liquid?
In the upper atmosphere, water vapor cools, which causes it to condense into a liquid.
What is the difference between a producer and a consumer?
A producer is an organism that makes its own energy using the sun’s light. A consumer is an organism that must eat to obtain energy.
How does the formation of Sedimentary Rock differ from the formation of Fossil Fuels?
Sedimentary Rock is formed by WED-CC (weathering, erosion, deposition, compaction, and cementation). Fossil Fuels are formed by THOP (Time, Heat, Organic Matter, and Pressure).
How do independent variables, dependent variables, and controlled variables differ.
Independent Variable is the one thing that changes in an experiment. Dependent Variable is the one thing that we are measuring. Controlled Variables is everything else that we keep the same in an experiment.
A book is sitting on a table. What type of force is that?
An equal/balanced force
How is a delta formed?
A delta is formed when flowing water slows down and deposits sediment on the ground at the mouth of a river. Over time, these sediments build up and create a delta.
Explain the environmental differences between the formation of coal and the formation of oil and natural gas.
Oil and natural gas are made from ocean organisms, while coal is made from swamp plants.
A student takes out a soda can from the fridge. A few minutes later, he notices tiny droplets on the side of the can. Explain what happened in detail.
The cold soda can caused the warm air around it to cool down. When the warm air cools, it changes from a gas into a liquid. This process is known as condensation.
A student groups the following materials together:
Copper wire, brick, wood, and rubber
Which property did the student most likely use to group the materials?
Physical State
How is energy transferred when a flashlight is turned on?
What is the relative time of day when the sun is in between North and West?
The sun is heading towards setting; it could be anywhere from 1:00 p.m. to 7:00 p.m.
The bearberry plant is a low-growing evergreen with leathery leaves and silky hairs that provide protection in tundra environments. How does growing low to the ground benefit the bearberry plant?
It provides the plant protection from the cold and wind.
What properties of matter do these items have in common? Wooden Block, Copper Penny, and Oil.
Magnetism and Solubility