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WorksheetsC165 Retake
Total questions: 29
Worksheet time: 15mins
Consider two trains traveling a rail station, one moving to the west and the other to the east. Both are moving at 1.0 m/s. Their speeds are
Different
The same
A ball is initially moving down a ramp with an increasing velocity. Which term describes the ball's acceleration at that instant?
Not accelerating
Acceleration by slowing down
Acceleration by changing direction
Acceleration by speeding up
Suppose the grocery cart is at rest, an you push it to accelerate it into motion How does the result differ if you pushed with a force of 40 N instead of 20 N for the same amount of time?
The cart ends up moving slower compared to before
The cart ends up moving faster compared to before
Forces acting on an object that combine to give zero net force are said to be balanced. Why would that term be appropriate?
The forces are equal in magnitude and cause acceleration to the left
The forces cancel each other and cause zero acceleration
The forces look nice and are harmonious
The forces point in the opposite directions and cause acceleration to the right
NASA has used this same idea to "weigh" astronauts during space missions. They developed a device in which the astronaut glides back and forth by being pushed and pulled by springs. The springs apple the same force during each swing. The velocity of the astronaut is constantly changing as the force from the spring accelerates him first one way, the other. If the astronaut has lost weight while in space, would the spring accelerate him back and forth more easily or less easily?
More easily
Less easily
The same as before
Which of the following choices gives a velocity?
A person walking 1.5 mph
A bird flying south for the winter at 10 m/s
A car traveling 15 mph through a school zone
A stationary bicycle with wheels rotating at 200 mph
A car is driving at 30 mph and approaches a stop sign. When the driver applies the brakes, which of the following is true of the car's velocity and acceleration?
The car's velocity is forward, and the acceleration is forward.
The car's velocity is backward, and the acceleration is forward.
The car's velocity is forward, and the acceleration is backward.
The car's velocity is backward, and the acceleration is backward.
Two vehicles, a semi truck and a small car, are stopped at a stop light. Which one has the greater inertia to start moving when the light turns green?
semi
small car
both have the same inertia
not enough information
Select all of the pairs that apply to Newton's 3rd law.
A person pushing against a wall
A baseball accelerating away from a bat after being hit
The friction and engine force of a car traveling at constant speed
Stopping a moving car at 35 mph
Which question could be answered with a controlled experiment?
Does ice melt faster in an empty glass or in a glass full of water?
Do all planets have the same shape of orbit around the sun?
What is the maximum distance between Earth and Jupiter?
What is the length of the longest river in North America?
Why was the shrinking Earth idea replaced by the theory of plate tectonics?
Plate tectonics was a new theory, which made it more reliable
Plate tectonics explained observations about Earth that the shrinking Earth idea could not explain
Geologists voted on which theory to accept, and chose plate tectonics
Many well-known geologists were involved in proposing plate tectonics
Astronomers have long accepted that plate tectonics exists nowhere in our solar system except on Earth. In 2011, a scientist analyzed 100 NASA-space-mission photographs of Valles Marineris on Mars, the longest known series of canyons in the solar system. The scientist found that Valles Marineris showed features found only in locations on Earth where major tectonic plates divide.
What would be the appropriate response of scientists to this information?
Reject plate tectonics on Mars as the explanation because it contradicts accepted science
Decide whether to accept plate tectonics on Mars based on the reputation of scientists involved
Hold public debates among scientists and then vote whether plate tectonics occurs on Mars
Carry out further research to gain more understanding of possible plate tectonics on Mars
Which statement correctly contrasts sound waves and electromagnetic waves?
Sound waves are transverse waves, and electromagnetic waves are longitudinal waves
Sound waves can travel in a vacuum, but electromagnetic waves cannot
Sound waves travel faster than electromagnetic waves
Sound waves travel slower than electromagnetic waves
Which is a characteristic of electromagnetic waves?
Transverse wave motion
Travels faster through water than air
Longitudinal wave motion
Can travel only through a vacuum
What energy conversion takes place as a box slides to a stop on a horizontal table?
Kinetic energy is converted into thermal energy
Gravitational potential energy is converted into kinetic energy
Chemical potential energy is converted into gravitational potential energy
Elastic potential energy is converted into gravitational potential energy
Which action demonstrates a chemical change?
Cooking an egg
Shredding paper
Evaporating water
Breaking a stick
Which type of bond is formed when valence electrons are shared between two atoms?
Ionic
Mechanical
Covalent
Metallic
A beaker contains 500 g of liquid water. An ice cube with a mass of 5 g is added to the water in the beaker.
How many grams of liquid water are in the beaker when the ice has melted?
Less than 500g
500g
505g
More than 505g
A chemist places 250 grams of liquid water into a beaker. The volume of the liquid water is 250 milliliters. The chemist then freezes the water. After it is frozen, the ice has a volume of 273 milliliters.
What is the mass of the ice?
250g
Between 250g and 273 g
273g
More than 250g
When baking soda is added to vinegar, a chemical reaction occurs. The reaction produces carbon dioxide gas, and a liquid solution consisting mostly of water and a salt called sodium acetate.
How is mass affected in this reaction, according to the law of conservation of matter?
The total mass of baking soda and carbon dioxide must equal the total mass of the liquid solution
The total mass of baking soda and vinegar must equal the total mass of carbon dioxide and the liquid solution.
The total mass of baking soda and vinegar must equal the total mass of the liquid solution.
The total mass of vinegar and water must equal the total mass of baking soda, carbon dioxide, and the liquid solution.
Which subatomic particle is located outside the nucleus?
Proton
Neutron
Electron
Ion
A chocolate chip cookie is made with dough and chocolate chips.
Which type of substance is a chocolate chip cookie?
Element
Compound
Mixture
Mineral
Which example describes a compound?
A substance with only iron atoms
A substance with sodium atoms bonded to chlorine atoms
A substance with fluorine and nitrogen atoms that are not bonded together
A substance with iron and aluminum atoms that are not bonded to each other
Where is metamorphic rock found in the rock cycle?
After erosion and deposition
After folding and cracking
After heat and pressure
After melting and cooling
Through which layer of the atmosphere does a mountaineer climbing a tall mountain ascend?
Troposphere
Stratosphere
Mesosphere
Thermosphere
A meteorologist is studying the formation of a hurricane.Which layer of the atmosphere is the meteorologist studying?
Troposphere
Stratospher
Mesosphere
Thermosphere
Which feature is common to all of the terrestrial planets?
A dense atmosphere
Liquid water oceans
Tectonic plates
A dense metallic core
Where are most of the asteroids in the solar system located?
Between the Sun and Mercury
Between Earth and Mars
Between Mars and Jupiter
Between Saturn and Uranus
Which renewable energy source is used to create electricity through the production of steam?
Geothermal
Wind
Solar
Hydropower
