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WorksheetsQuarter 2 Practice
Total questions: 30
Worksheet time: 3hrs 30mins
Pierre is studying the stars, and he learns that Bernard's star is the third closest star to Earth, although it cannot be seen without a telescope. He also knows that the brightest star in the sky, Sirius, can be seen by the naked eye but is much farther away. Which of the following explains why Sirius can be seen without a telescope?
A. All stars are the same temperature, so Sirius must be larger than Bernard's star.
B. All stars are the same size, so Sirius must be hotter than Bernard's star.
C. Sirius is much larger and hotter than Bernard's star.
D. Bernard's star is much larger and hotter than Sirius.
A student followed these steps for an investigation:
1. Place 2 grams (g) of salt in 500 milliliters (mL) of water at room temperature.
2. Stir the salt and water together until the salt can no longer be seen.
3. Record the amount of time needed for the salt to dissolve completely.
4. Repeat steps 1-3 using hot water.
5. Repeat steps 1-3 using cold water.
What is the student testing in this investigation?
A. how much salt can be dissolved in water in a given amount of time
B. how the amount of water affects the time it takes for salt to dissolve
C. how temperature affects the time it takes for salt to dissolve in water
D. how much time it takes for different amounts of salt to dissolve in water
Mel is watching a demonstration of glassblowing. An artist heated up sand causing it to melt into glass. Mel noticed that the glass is red-hot after taking it out of the furnace. After the artist blew into the pipe, it expanded and started to cool. As the color faded from the red-hot temperature, Mel noticed that the artist sealed the end of the tube, trapping hot air inside. The artist continued working on the surface of the glass which was still very soft and workable. When the artist finished creating the glass sculpture, she talked with Mel and told him that sand and glass have the same chemical formula.
Which of the following best describes the type of change that the sand experienced in order to be turned into glass?
A. The sand experienced a chemical change because it became hot when turning into glass.
B. The sand experienced a chemical change because it turned red when turning into glass.
C. The sand experienced a physical change because it was able to be manipulated when turning into glass.
D. The sand underwent a physical change because its chemical structure remained the same when turning into glass.
Diego carefully places ten marbles into a graduated cylinder filled with water, making sure no water splashes out. He then measures how high the water level rises and divides this value by ten. He then repeats this process using ten metal jacks. What property of the marbles and the jacks can Diego now directly compare?
mass
shape
temperature
volume
All matter is composed of parts too small to be seen without magnification. What is the smallest unit of matter?
atoms
compounds
gases
molecules
Mark put the same amount of water onto two plates. He placed one plate in direct sunlight and the other in the shade. After a few hours, he observed that most of the water had disappeared from the plate in the sunlight, but only a little had disappeared from the plate in the shade.
Which hypothesis is best supported by the observations from his experiment?
A. If a plate of water is placed in the sunlight, then it will heat up.
B. If a plate of water is placed in the shade, then the water cycle does not go forward.
C. If a plate of water is placed in sunlight, then it will evaporate faster than water placed in the shade.
D. If a plate of water is placed in the shade, then it will collect more water as long as it stays out of the sunlight.
Blake added 10 grams of salt to 500 milliliters of water to make a weak solution. Which action would increase the speed at which the salt dissolved in water?
A. Place the solution in the freezer.
B. Stir the solution with a mixing rod.
C. Add the salt to the water one grain at a time.
D. Double the amount of salt added to the water.
Where can the most asteroids be found in our solar system?
By the sun.
The asteroid belt in between the inner and outer planets.
Next to Jupiter.
Saturn's rings.
A group of students wants to create a model of the water cycle. Which characteristic of the model is most important if they want to observe condensation?
A. The model should have a tight-fitting lid.
B. The model should be placed in a dark closet.
C. The model should have soil to absorb the water.
D. The model should have space for the new water that is produced.
Mrs. Garcia's class is studying galaxies. She asked a student to describe a galaxy. Which statement is the best description of a galaxy?
A. gas, dust, billions of stars, and planets
B. a star, planets that orbit the star, gas, and dust
C. a planet, moons that orbit the planet, gas and dust
D. a group of planets, moons that orbit planets gas, and dust
Which two planets are most similar in their composition?
A. Earth and Mars
B. Venus and Saturn
C. Venus and Jupiter
D. . Earth and Neptune
Christina's younger sister says that in order to breathe, her goldfish must jump out of the water when no one is looking, take a deep breath, then jump back in the water. How could Christina help her sister investigate this prediction with the scientific method?
A. Christina could have her sister imagine being a goldfish.
B. Christina could have her sister watch the goldfish as it swims.
C. Christina could give her sister a picture of a goldfish to look at.
D. Christina could have her sister estimate how far the fish would have to jump to leave the water.
Which description correctly states how water moves from an ocean to a high mountain glacier?
A. Ocean currents move water near the mountains where the water is evaporated and then falls as rain and condenses on a glacier.
B. Ocean currents move water near the mountains where the water is condensed and then falls as snow and evaporates into a glacier.
C. Water evaporates from the ocean and condenses in clouds where wind currents move the clouds to the mountains. There, it falls as snow and becomes part of the glacier.
D. Water evaporates from the ocean and precipitates into clouds where wind currents move the clouds to the mountains. There, it falls as snow and becomes part of the glacier.
A bowl of a mixture of salt and water is left in the sunlight. What will happen to the mixture?
A. The Sun will not affect the salt and water mixture.
B. The Sun will cause the water and salt to evaporate.
C. The Sun will cause the water to evaporate and leave the salt.
D. The Sun will cause the salt to evaporate and leave pure water
When living organisms die, they are broken apart by worms, bacteria, and other organisms to make compost. This process is called decomposition, and it involves some chemical reactions that can take long periods of time to complete. Because gardeners can use compost to fertilize their plants, they often look for ways to increase the rate of decomposition.
Which of the following statements is most likely to be accurate?
A. Placing the organic matter on a windswept hill will allow it to cool down and decompose more rapidly.
B. Using a fan to blow fresh air onto the organic matter will allow it to cool down and decompose more rapidly.
C. Piling up the organic matter will allow heat to build up inside and allow it to decompose more rapidly.
D. Thinly spreading the organic matter will allow heat to build up inside and allow it to decompose more rapidly.
A class finished an investigation on the life cycles of the butterfly and grasshopper. Before the investigation, the teacher told the students to write all the steps in their science interactive notebook. She explained that the purpose of writing the steps is so that the investigation can be replicable.
Which statement best describes what the teacher meant when she said the investigation can be replicable?
A. The investigation can be used to compare the insects' life cycles.
B. The investigation can be replicated to see if others can get the same results.
C. The investigation can be changed so that all the students' results are similar.
D. The investigation can be improved to determine the life cycles in a shorter amount of time.
Which statement best describes how Mars is different from Jupiter?
A. Mars has moons, while Jupiter has no moons.
B. Mars rotates on its axis, while Jupiter does not rotate.
C. Mars has a rocky surface, while Jupiter's surface is made up of gases.
D. Mars is one of the largest planets, while Jupiter is one of the smallest planets.
Manuel sees snow outside. Which conditions most likely describe the weather outside?
A. cirrus clouds, high pressure, and 0°Celsius
B. cirrus clouds, high pressure, and 15°Celsius
C. stratus clouds, low pressure, and 15°Celsius
D. stratus clouds, low pressure and 0°Celsius
Which statement is not true about the gas planets?
A. The gas planets rotate on a tilted axis.
B. The gas planets have no solid surface.
C. The gas planets orbit closest to the Sun.
D. The gas planets are relatively large and massive.
A student predicted that only dark-colored moths would be found on trees with dark-colored bark. She observed the trees in a small patch of forest near her school once a week for eight weeks. The data collected during the first five weeks of the investigation supported her prediction, but in the sixth week, she found three light-colored moths on trees with dark-colored bark.
What should the student do about her discovery?
A. Stop the investigation and work on a different idea for another investigation.
B. Ignore the light-colored moths because they are not part of her investigation.
C. Change the investigation to find out why the light-colored moths were on the dark-colored trees.
D. Finish the investigation and plan another investigation to learn more about light-colored moths on dark-colored trees.
Which type of storm has the following characteristics?
1. composed of cumulonimbus clouds
2. forms over land
3. can produce gusty winds, heavy rain, and hail
tornado
hurricane
thunderstorm
winter storm
Ken needs to design an experiment that shows how the surface area of sugar affects the rate at which it will dissolve in water. Which statement describes the best way to show the relationship between surface area and rate of dissolving?
A. Time how fast loose sugar dissolves in water at room temperature and how fast loose sugar dissolves in hot water.
B. Time how fast a cube of sugar dissolves in water at room temperature and how fast loose sugar dissolves in hot water.
C. Time how fast a cube of sugar dissolves in water at room temperature and how fast a cube of sugar dissolves in hot water.
D. Time how fast a cube of sugar dissolves in water at room temperature and how fast loose sugar dissolves in water at room temperature.
There are lots of objects in our solar system, but only eight of them are planets. What do all planets have in common?
A. They are all made of rock or ice.
B. They all have rings or moons as satellites.
C. They are all nearly round and orbit the Sun.
D. They all rotate on an axis and orbit the Earth.
Swamps and deserts may have the same temperatures during certain times of the year, but the amount of humidity in the air may be different.
How does humidity affect a desert environment compared to a swamp environment?
A. A desert has more clouds than a swamp.
B. A desert has higher humidity than a swamp when temperatures are high.
C. A desert has less precipitation than a swamp because of the desert's lower humidity.
D. A desert has lower daytime temperatures than a swamp because the desert has less humidity.
Jana notices that the lamps in her house vary in brightness. She makes a table, listing them in order of increasing brightness.
Which type of scientific investigation is Jana performing?
A. comparative investigation
B. descriptive investigation
C. experimental investigation
D. historical investigation
Which is the best description of the temperatures in a coastal climate zone?
A. hot all year
B. cold all year
C. cool winters and hot summers
D. freezing winters and very hot summers
What scientific investigation will most likely have the same results in every trial?
A. A student pours 2g of sugar into 500 ml of water at 20°C, and records the time it takes to dissolve.
B. A student walks through a park each Friday at 3:00 p.m., and records the types and numbers of each animal she sees.
C. A student observes the temperature and weather conditions outside her home each morning at 7:00 a.m., and records the data.
D. A student places different amounts of water in a different location each day for a week, and records the amount of water left at the end of the day.
Two mountains are located at the same latitude. Which statement about the amount of precipitation on the two mountains must be true?
A. The lower elevations of both mountains have more precipitation than the upper elevations.
B. The mountain with a higher elevation has more precipitation per year than the mountain with a lower elevation.
C. The mountain that is closer to the ocean has less precipitation per year than the mountain that is farther from the ocean.
D. The side of both mountains that is farther from the ocean has more precipitation than the side that is closer to the ocean.
The Sun is a star, but not the largest star in our galaxy. Which one of the following best explains why Earth receives more energy from the Sun than from any other star?
A. The Sun is the closest star.
B. The Sun is a very young star.
C. The Sun is the hottest star in the galaxy.
D. The Sun gives off more energy than any other star.
During the water cycle, water is evaporated from Earth and then returns to Earth in the form of precipitation. Which statement is a verified observation that can be made from studying the water cycle?
A. The water cycle is different every year.
B. The water cycle is easy for people to understand.
C. The water cycle should be studied by meteorologists.
D. The water cycle changes water from a gas to a liquid.
