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WorksheetsScience CFA 3.1 Review
Total questions: 13
Worksheet time: 7mins
A scientist is studying changes in the shape of a river. The scientist is interested in how rivers change course. Which of the following is the BEST way for the scientist to observe these changes?
recording the river with a video camera for one whole day
taking a picture of the river once a year for many years
taking a picture of the river once a day for several weeks
following the river on a kayak for a couple of days.
Students observed the two rocks . Which of the following statements could a student add to his/her journal that BEST compares the two rocks observed?
Rock 1 has been weathered more than Rock 2.
Rock 2 has been weathered more than Rock 1.
Rock 1 and 2 have been weathered the same amount.
Rock 1 has less mass than Rock 2.
A lot of people are trying to conserve natural resources by using new technology. One of the new technologies is solar power. Which of the following natural resources would solar power have the most direct effect on for the conservation of natural resources?
Fossil Fuels
Soil
Air
Animals
Which describes the texture of a soil that BEST prevents water from flowing through?
coarse and loose
soft and spongy
fine and tightly packed
well mixed, not too coarse or fine
Thomas Edison a scientist, was known as one of America's greatest inventors, for creating the electric light bulb?
True
False
Buoyancy, the ability to float, can be tested in _______.
soil
water
rock
wood
If Beaker 1 contains salt water and Beaker 2 contains sugar water. Which of the following does NOT describe the solutions in the beakers?
Both solutions are liquids.
The solutions are solids.
They contain material dissolved in water.
The solutions have the same volume.
Copper wires are great conductors of electricity and are used to carry currents throughout homes. Around the outside of the wire is a plastic coating. What property does the plastic have that makes it a useful coating around the copper wires?
Electrical conductor
Thermal conductor
Electrical insulator
Thermal insulator
Which of the light bulbs would light up in the diagrams below?
A
B
C,D
Some students wanted to see if a toy car on an oily surface travels faster than a toy car on a non–oily surface. They used two ramps–one covered with oil and one without oil. The students released a model car on each ramp once. The students should test each ramp three more times to —
write a hypothesis
get accurate data
analyze their procedure
display their results
Lucia wanted to use a horseshoe magnet to test some items she had collected to find out if they were attracted to the magnet. She collected two aluminum soda cans, a pile of brown sand, a pile of gray ashes from the fireplace, and some steel nails.
Select item below that would stick to the magnet.
aluminum soda can
pile of brown sand
pile of gray ashes from the fireplace
steel nails
Weathering is one way Earth's surface is changed. Which of the following is NOT a form of weathering?
rocks rubbing against each other
ice grinding rocks
soil or dirt moved by floods
wind blowing bits of sand into rock
Students visit an island. The island beach is covered with many small pebbles. Each one is a little bigger than a pea. The beach gets strong ocean waves. After thousands of years, the pebbles on the beach will MOST LIKELY be —
broken down into smaller pieces
pushed into a pile in the middle of the island
larger and a different color
pressed together to form one large rock
