devry sci214 week 1 ,2,3 and week 5 quizes

Question

(TCO 1) Which property listed below is not a fundamental property?

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Length

Mass

Weight

Time

Question 2. Question :

(TCO 1) Measured properties that have different values at different times are ________.

the result of measurement errors

impossible

called variables

called scientific flukes

Question 3. Question :

(TCO 1) A controlled experiment compares two situations that ____________.

have all variables identical except for the one under investigation.

have all variables be the same.

have no variables.

use only a control group.

Question 4. Question :

(TCO 1) Which of the following could be used by scientists to visualize or understand something that cannot be observed directly?

The theory of plate tectonics

Newton’s laws of motion

A model of the solar system

Archimedes’ Principle

Question 5. Question :

(TCO 1) Imagine a 10g chunk of aluminum (p=density =2.7 g/cm^3) and a 10g chunk of iron (p=density=7.9 g/cm^3). Which of the following is true?

The chunk of iron is smaller than the chunk of aluminum.

The chunk of iron is more massive than the chunk of aluminum.

The chunk of aluminum is smaller than the chunk of iron.

Both objects have the same volume.

Question 6. Question :

(TCO 1) What are the steps of the scientific method?

quiz 2

(TCO 2) A cannonball is fired straight up at 50 m/s. Neglecting air resistance, when it returns to its starting point, its speed is __________.

50 m/s

more than 50 m/s

less than 50 m/s

depends on how long it is in the air

Question 2. Question :

(TCO 2) Acceleration occurs when an object undergoes _________.

a speed increase

a speed decrease

a change in the direction of travel

CORRECT all of the choices are correct

Question 3. Question :

(TCO 3) Which quantity has the greatest influence on the amount of kinetic energy that a large truck has moving down the road?

Mass

Velocity

Size

Weight

Question 4. Question :

(TCO 3) Most energy leaves the Earth in the form of ________.

nuclear energy

kinetic energy

chemical energy

radiant energy

Question 5. Question :

(TCO 3) Which path would result in more work accomplished in moving a box to the same spot on the table?

A

B

C

All would be equal.

Question 6. Question :

(TCO 2) What are Newton’s Three Laws of Motion?

Question 7. Question :

(TCO 3) What is work? How much work needs to be done to lift a 500 kg mass from the ground to a height of 20 meters?

quiz 3

TCO 4) Consider the electron dot diagram of the unknown element X: . This atom would most likely _______.

form an ion of +6 charge.

react with hydrogen to form H2X.

lose two electrons when forming an ion.

form an ion of +2 charge.

Question 2. Question :

(TCO 4) The attractive John Dalton reasoned that atoms exist from the evidence that ________.

there are numerous, tiny empty spaces in matter.

elements always combined in certain fixed ratios.

elements could not be broken down into simpler substances.

matter was homogenous.

Question 3. Question :

(TCO 5) The size of the current in a conductor depends on the _______ as well as the voltage.

resistance

power

coulombs stopped

none of the above

Question 4. Question :

(TCO 5) Which of the following is a not a similarity between magnets and electrical charges?

There are attractive and repelling forces between unlike or like poles or charges.

Both magnets and electrical charges establish fields.

Both exert forces at a distance.

Both magnetic poles and electric charges can be separated.

Question 5. Question :

(TCO 5) The magnitude of the resistance of a wire depends on _________.

the length of the wire

the cross-sectional area of the wire

the temperature of the wire

all of these are true

Question 6. Question :

(TCO 4) What are the differences between ionic and covalent chemical bonds? Give an example of a compound formed from these bonds.

quiz 5

(TCO 8) A nucleus is found in:

bacteria.

eukaryotic cells.

blue-green algae.

All of the above

:

Question 2. Question :

(TCO 8) The endoplasmic reticulum:

functions in the internal transport of macromolecules.

carries on cellular respiration.

is the site of photosynthesis.

INCORRECT is dispersed nuclear material of DNA and protein.

Question 3. Question :

(TCO 8) The order in which the stages of mitosis proceed is:

anaphase, interphase, metaphase, prophase, telophase.

interphase, anaphase, metaphase, prophase, telophase.

prophase, metaphase, anaphase, telophase, interphase.

interphase, telophase, prophase, anaphase, metaphase.

Question 4. Question :

(TCO 7) A food chain typically begins with:

decomposers.

producers.

commensals.

consumers.

Question 5. Question :

(TCO 7) Which one of the following is a logical food chain?

Grass-grasshopper-horse

Fish-grasshopper-snake

Light-grass-human

Grass-cow-human

Question 6. Question :

(TCOs 7, 8) Describe what happens in the different phases of mitosis.

Explanation & Answer

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