End Of Year Review #2 Question Preview (ID: 19797)
TX TEKS 6th Grade Science.
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A beaker holds a clear solution of potassium iodide, KI. You pour a clear solution of lead nitrate, Pb(NO3)2, into the beaker. The picture above shows what happens. What can you conclude from these results?
a) The yellow solid is lead nitrate that did not dissolve.
b) the yellow solid is potassium iodide that did not dissolve.
c) A change of state in lead nitrate or potassium iodide formed the yellow solid
d) A chemical reaction between lead nitrate and potassium iodide formed the yellow solid
A runner completes a 400 meter race in 2.5 minutes. What is the runner's average speed?
a) 100 meters per minute
b) 120 meters per minute
c) 160 meters per minute
d) 180 meters per minute
Which structure indicates that the cell is eukaryotic?
a) nucleus
b) cell membrane
c) cell wall
d) cytoplasm
What kind of formation is found at the boundary between two pieces of oceanic crust that are spreading apart from one another?
a) Abyssal plain
b) Ocean trench
c) Mid-ocean ridge
d) Folded mountain range
A volleyball player throws a ball straight up into the air. The ball falls back down again and hits the gym floor. Which kind of energy is at its lowest when the ball is at its highest point in the air and at its highest when the ball hits the floor?
a) Kinetic energy
b) mechanical energy
c) potential energy
d) thermal energy
Which description characterizes a typical metal?
a) brittle solid
b) dull appearance
c) electrical insulator
d) thermal conductor
Which of these objects carried people into space?
a) satellite
b) space probe
c) space shuttle
d) telescope
A scientist is testing an unknown mineral by scratching it against several known minerals. What property is the scientist testing?
a) conductivity
b) hardness
c) luster
d) malleability
Earth’s major tectonic plates include the Eurasian, African, Indo-Australian, Pacific, North American, and South American plates. What are these tectonic plates named after?
a) The continents whose shapes they resemble
b) The major water or land masses above them
c) The names of the scientists who discovered them
d) The countries of the scientists who discovered them
Gravity is a force of attraction between objects that have
a) mass
b) motion
c) light energy
d) electric energy
Which is the chemical symbol for the element copper?
a) C
b) Co
c) CO
d) Cu
A student wants to use an apple to model Earth’s layers. She explains that the skin of the apple is like Earth’s crust. The apple’s core is like Earth’s core. Its pale flesh is Earth’s mantle. Which is a limitation of this model?
a) Earth has fewer layers than an apple.
b) An apple has fewer layers than Earth.
c) Earth’s crust is not its outermost layer
d) Earth’s core is not deeper than its mantle.
Kinetic energy is related to an object’s
a) Chemical bonds
b) electric charge
c) motion
d) postion
Which force keeps the space station in orbit?
a) electric
b) friction
c) gravity
d) magnetism
What kind of rock forms when lava from a volcano cools?
a) igneous
b) magma
c) metamorphic
d) sedimentary
The picture above shows a teapot full of cool water. It is resting on a hot metal stove burner. Which describes how thermal energy is transferred to the teapot?
a) Convection in a gas
b) Convection in a liquid
c) Radiation through a gas
d) Conduction through metal
A sample of gas has a volume of 5 L and a mass of 0.9 g. What is the density of the gas in grams per liter
a) .1
b) .18
c) .45
d) 1.45
Which is a biotic part of this ecosystem?
a) air
b) cactus
c) sand
d) water
whic of the following is a not mixture?
a) milk
b) blood
c) trail mix
d) water
What natural force causes the downward motion of the apple when it falls out of a tree?
a) air resistance
b) electric force
c) friction
d) gravitiy
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