BARU
Ukuran huruf
Lembar kerja2022 Interim Non-Tested Standards - 8th Science
Total soal: 18
Worksheet time: 11mins
7.6A - All these are examples of a chemical change EXCEPT....
Rusting metal
Boiling water
Burning paper
Rotting food.
7.6A - Students collect rock samples on a field trip and test them for different properties. Which of the following is a chemical property of a rocks?
Having a white color
Reacting when test with a drop of acid
Having a rough surface
Being easy to scratch with a piece of metal.
6.6B - Looking at Figure C, if a substance had a mass of 27g and a volume of 10mL, which substance could it be?
Aluminum
Iron
Lead
Tin
6.9C - This appliance dries clothes primarily by converting —
electrical energy to heat and mechanical energy
mechanical energy to heat and electrical energy
electrical energy to heat and light
mechanical energy to heat and vaporization
7.10B - Refer to the food web. If the grasses in each ecosystem are attacked and killed by a disease, which ecosystem will most likely survive?
A. The prairie ecosystem, because few organisms eat grass.
B. The tundra ecosystem, because there is a variety of producers.
C. The prairie ecosystem, because there a fewer top predators.
D. The tundra ecosystem, because it has more herbivores.
7.12D - Which organelle breaks down sugar to create energy?
MITOCHONDRIA
NUCLEUS
CYTOPLASM
CELL WALL
7.12D - This structure supports and protects plant cells.
7.12F - A plant and an animal are both living things. According to the cell theory, what can you conclude about these two very different organisms?
Plants have cells but animals do not.
They both come from the same kind of cell.
They are both made of one or more cells.
They both come from a non-living organism.
7.14C - Three cousins have a similar appearance but have different face shapes. Which of these cell components are most involved in determining the basic shape of each girl’s face?
6.12D - A paramecium is a single celled organism with a nucleus that consumes other organisms for energy. The offspring are genetically different from its parents.
8.10A - An illustration of how a convection current creates a wind, called a land breeze, is provided. Which of the following best explains what creates this convection current?
The rotation of Earth makes the air above it rotate, but not the same over land and water.
Because of its mass, Earth’s gravity creates a high pressure area over both the land and water.
Salt in the ocean makes it more dense than the land, so its gravity pulls more on the air above it.
During the evening, the land cools off more quickly than the water, so the air is different temperatures.
8.10B - What is the best forecast for New Orleans, Louisiana (yellow star) in this image?
8.6B - What is this graph showing? (6.8D)
Constant Speed
Acceleration (speeding up)
Deceleration (slowing down)
No motion
7.10C - A garden is left abandoned, what will be the first things to grow?
Lichens and Moss
Grasses and weeds
Shrubs
Trees
7.11C - Roseate Spoonbills have evolved to have wide, spoon-shaped beaks. How did this adaptation probably happen?
individuals with wide beaks were more attractive to mates, and therefore reproduced more often
humans liked how wider beaks looked, so we selectively bred birds with wider and wider beaks
individuals with wider beaks confused predators that saw them, survived longer, and therefore reproduced more often
individuals with wide beaks caught more food, lived longer, and therefore reproduced more often
8.8C - Scientists make observations in different wavelengths because
information provided by visible light is not a reliable source
observations in different wavelengths provide different information about the stars.
the equipment required for observations in other wavelengths is expensive
7.8C - A student’s model of an area near a city depicts many activities that affect the quality of the water in the area. How does the agricultural activity most likely affect the surface water of the area?
Crops absorb pure water from soil, causing the remaining water to contain more salt.
Crops reduce erosion, increasing the amount of soil entering the river.
Excess crop fertilizer is carried by runoff into the river, causing excess growth of water plants.
Excess crop material accumulates on the riverbanks, slowing the movement of the river water
6.11B - Why do planets orbit the Sun?
The Sun's weight makes it attract planets.
The Sun is the only celestial object that has a gravitational pull.
The Sun's chemical composition makes it attract planets.
The Sun is the most massive object in our solar system, so it exerts the greatest gravitational pull.
