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PUC - RJ 2019 - Inglês - Interpretação de texto | Reading comprehension

In the last paragraph, Walt Meier affirms that “The Arctic is an indication of what’s coming to the rest of the globe” (lines 86-87) because

The Arctic Ocean has lost 95 percent of its oldest ice — a startling sign of what’s to come

By Chris Mooney
December 11, 2018



Available at: <https://www.washingtonpost.com/energyenvironment/2018/12/11/arctic-is-even-worse-shape-thanyou-realize/?noredirect=on&utm_term=.508085a17318>. Retrieved on: July 2, 2019. Adapted.
A
scientists have developed a warning system to alert the globe when the temperature in the Arctic goes from 31 oF to 33 oF.
B
sea ice experts living in the Arctic can easily predict changes in the weather forecast worldwide.
C
weather changes are more dramatically felt around the world than in the Arctic Ocean.
D
any minor temperature change in the Arctic Ocean can have major global implications.
E
people can go from ice skating to swimming in the Arctic depending on the season.
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PUC - RJ 2019 - Inglês - Interpretação de texto | Reading comprehension

According to paragraphs 9 and 10 (lines 60-78), PIOMAS is a model intended to

The Arctic Ocean has lost 95 percent of its oldest ice — a startling sign of what’s to come

By Chris Mooney
December 11, 2018



Available at: <https://www.washingtonpost.com/energyenvironment/2018/12/11/arctic-is-even-worse-shape-thanyou-realize/?noredirect=on&utm_term=.508085a17318>. Retrieved on: July 2, 2019. Adapted.
A
keep track of the melting of young and thin ice in the Arctic.
B
gather information about variations in ice volume in the Arctic.
C
evaluate how the change of seasons affects ice extent in the Arctic.
D
investigate how submarines and satellites affect ice volume in the Arctic.
E
study the stability of the Arctic sea ice system during the summer months.
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PUC - RJ 2019 - Inglês - Interpretação de texto | Reading comprehension

Nathan Kurtz affirms “I was shocked by how different it was” (line 33) to express his concern about the

The Arctic Ocean has lost 95 percent of its oldest ice — a startling sign of what’s to come

By Chris Mooney
December 11, 2018



Available at: <https://www.washingtonpost.com/energyenvironment/2018/12/11/arctic-is-even-worse-shape-thanyou-realize/?noredirect=on&utm_term=.508085a17318>. Retrieved on: July 2, 2019. Adapted.
A
melting of the oldest, thickest ice in the Arctic.
B
constant flights over the seas north of Greenland.
C
strange wind event that caused the breakup of old, thick ice.
D
dangerous mission in the polar regions using research aircraft.
E
smooth, thin strips of ice that can only be glimpsed by NASA’s satellite.
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PUC - RJ 2019 - Inglês - Interpretação de texto | Reading comprehension

In terms of numerical reference,

The Arctic Ocean has lost 95 percent of its oldest ice — a startling sign of what’s to come

By Chris Mooney
December 11, 2018



Available at: <https://www.washingtonpost.com/energyenvironment/2018/12/11/arctic-is-even-worse-shape-thanyou-realize/?noredirect=on&utm_term=.508085a17318>. Retrieved on: July 2, 2019. Adapted.
A
“78 percent” (line 61) refers to the increase in the total volume of ice in the Arctic Ocean in September between 1979 and 2012.
B
“75 percent” (line 78) refers to the expansion of the September sea ice in the Arctic Ocean between 1979 and 2012.
C
“15 trillion tons” (line 81) refers to the amount of floating ice in the month of September in 2012.
D
“3.5 trillion tons” (lines 83-84) refers to the amount of floating ice in the month of September in 1979.
E
“4.66 trillion tons” (line 84) refers to the approximate amount of floating ice in September in the year the text was published.
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PUC - RJ 2019 - Inglês - Sinônimos | Synonyms

In the fragment “Young and thin ice can regrow relatively quickly once the dark and cold winter sets in.” (lines 55-57), sets in can be replaced, without change in meaning, by

The Arctic Ocean has lost 95 percent of its oldest ice — a startling sign of what’s to come

By Chris Mooney
December 11, 2018



Available at: <https://www.washingtonpost.com/energyenvironment/2018/12/11/arctic-is-even-worse-shape-thanyou-realize/?noredirect=on&utm_term=.508085a17318>. Retrieved on: July 2, 2019. Adapted.
A
gets under way
B
reaches its peak
C
comes to an end
D
is shorter than usual
E
unexpectedly finishes
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PUC - RJ 2019 - Inglês - Interpretação de texto | Reading comprehension

The expression in boldface conveys an idea of contrast in

The Arctic Ocean has lost 95 percent of its oldest ice — a startling sign of what’s to come

By Chris Mooney
December 11, 2018



Available at: <https://www.washingtonpost.com/energyenvironment/2018/12/11/arctic-is-even-worse-shape-thanyou-realize/?noredirect=on&utm_term=.508085a17318>. Retrieved on: July 2, 2019. Adapted.
A
“with major implications not only for creatures such as walruses and polar bears…” (lines 7-8)
B
“so it’s unclear whether it is directly linked to climate change.” (lines 41-42)
C
“Still the breakup could be just one more sign of the growing fragility of the oldest ice.” (lines 42-44)
D
“That’s easily visible – it can be glimpsed directly by satellite – and the areas is, indeed, in clear decline.” (lines 50-52)
E
“But it may not add much stability or permanence to the Arctic sea ice system if it just melts out again the next summer.” (lines 57-59)
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PUC - RJ 2019 - Inglês - Interpretação de texto | Reading comprehension

According to paragraphs 2 and 3 (lines 11-24),

The Arctic Ocean has lost 95 percent of its oldest ice — a startling sign of what’s to come

By Chris Mooney
December 11, 2018



Available at: <https://www.washingtonpost.com/energyenvironment/2018/12/11/arctic-is-even-worse-shape-thanyou-realize/?noredirect=on&utm_term=.508085a17318>. Retrieved on: July 2, 2019. Adapted.
A
ice-free summers in the Arctic may increase global warming.
B
solar heating has been making the Arctic ocean water darker.
C
dark ocean water helps prevent the absorption of solar heating.
D
young and thin ice is as thick as a glue and very difficult to melt.
E
young and thin ice keeps the Arctic cold even during the summer.
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PUC - RJ 2019 - Inglês - Vocabulário | Vocabulary, Sinônimos | Synonyms

Concerning the vocabulary used in the text, one may affirm that

The Arctic Ocean has lost 95 percent of its oldest ice — a startling sign of what’s to come

By Chris Mooney
December 11, 2018



Available at: <https://www.washingtonpost.com/energyenvironment/2018/12/11/arctic-is-even-worse-shape-thanyou-realize/?noredirect=on&utm_term=.508085a17318>. Retrieved on: July 2, 2019. Adapted.
A
“startling” (title) and conventional are synonyms.
B
“address” (line 24) and deal with express similar ideas.
C
“ongoing” (line 28) and continuous are antonyms.
D
“decreasing” (line 45) and shrinking express opposite ideas.
E
“realize” (line 75) means the same as ignore.
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PUC - RJ 2019 - Inglês - Interpretação de texto | Reading comprehension

In the fragment “The oldest ice can be thought of as a kind of glue that holds the Arctic together…” (lines 11-12), the fragment can be thought of conveys an idea of

The Arctic Ocean has lost 95 percent of its oldest ice — a startling sign of what’s to come

By Chris Mooney
December 11, 2018



Available at: <https://www.washingtonpost.com/energyenvironment/2018/12/11/arctic-is-even-worse-shape-thanyou-realize/?noredirect=on&utm_term=.508085a17318>. Retrieved on: July 2, 2019. Adapted.
A
advice
B
certainty
C
complaint
D
possibility
E
obligation
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PUC - RJ 2019 - Inglês - Interpretação de texto | Reading comprehension

The main purpose of the text is to

The Arctic Ocean has lost 95 percent of its oldest ice — a startling sign of what’s to come

By Chris Mooney
December 11, 2018



Available at: <https://www.washingtonpost.com/energyenvironment/2018/12/11/arctic-is-even-worse-shape-thanyou-realize/?noredirect=on&utm_term=.508085a17318>. Retrieved on: July 2, 2019. Adapted.
A
criticize scientists for not reaching a consensus on how to cope with global warming.
B
show deep concern for the future of Arctic creatures such as walruses and polar bears.
C
alert society to the dangerous percentual decrease of ice in the Arctic in the last decades.
D
blame the international community for the sudden melting of the oldest and thickest ice in the Arctic.
E
report on several studies being conducted to explain a strange wind event that caused ice break up in the Arctic.
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PUC - RJ 2017 - Química - Química Orgânica, Principais Funções Orgânicas: Hidrocarbonetos: Alcano, Alceno, Alcino, Alcadieno, Ciclos Alcano e Alceno, Aromáticos. Haletos.

A substância química representada a seguir é utilizada na fabricação de espumas, por conta de seu efeito de retardar a propagação de chamas.

Nessa substância, está presente a função orgânica

A
amina
B
aldeído
C
cetona
D
ácido carboxílico
E
haleto orgânico
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PUC - RJ 2017 - Química - Fórmulas, Balanceamento e Leis ponderais das reações químicas, Representação das transformações químicas

O timerosal (NaC9H9HgO2S) é uma substância conservante, adicionada em vacinas e soluções oftalmológicas para evitar o crescimento bacteriano. Por conter mercúrio, um elemento tóxico, em sua estrutura, seu uso vem sendo questionado. Dos valores abaixo, o que mais se aproxima do percentual, em massa, de mercúrio presente na estrutura do timerosal é

A
35
B
50
C
60
D
65
E
70
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PUC - RJ 2017 - Química - Teoria Atômica: átomos e sua estrutura - número atômico, número de massa, isótopos, massa atômica, Transformações Químicas

O elemento selênio (Se) tem massa atômica igual a 78,96 u.m.a. Os dois isótopos mais abundantes do selênio são o 80Se e o 78Se. Sobre estes isótopos de selênio, é correto dizer que eles têm

A
o mesmo número de massa.
B
abundâncias percentuais iguais.
C
o mesmo número de nêutrons.
D
diferentes configurações eletrônicas quando átomos de ambos se encontram neutros.
E
o mesmo número de prótons.
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PUC - RJ 2017 - Química - Equilíbrio Químico, Sistemas Homogêneos: Equilíbrio Químico na Água: pH e pOH, Indicadores Ácido-Base, Solução Tampão.

A alizarina, cuja estrutura está representada a seguir, é um corante orgânico que pode ser utilizado como indicador de pH. Em meio alcalino (pH 12), esse corante apresenta coloração violeta.

Dentre as soluções incolores (preparadas com água pura, ou seja, com pH neutro), qual poderia promover o aparecimento da coloração violeta no indicador de pH alizarina?

A
HCl 1 x 10-1 mol L-1
B
HCl 1 x 10-2 mol L-1
C
NaOH 1 x 10-2 mol L-1
D
NaOH 1 x 10-4 mol L-1
E
NaCl 1 x 10-4 mol L-1
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PUC - RJ 2017 - Química - Grandezas: massa, volume, mol, massa molar, constante de Avogadro e Estequiometria., Representação das transformações químicas

O silicato de sódio (Na2SiO3) utilizado na composição do cimento, pode ser obtido através de um processo de calcinação (em elevada temperatura) da sílica (SiO2) com carbonato de sódio (Na2CO3), de acordo com a equação química balanceada, representada a seguir:
 
SiO2(g) + Na2CO3(s)  Na2SiO3(s) + CO2(g)   

Dados:
M(SiO2) = 60 g mol-1
M(Na2SiO3) = 122 g mol-1

Considerando que o rendimento desse processo foi de 70%, a massa, em kg, de Na2SiO3 formada a partir de 9 kg de sílica foi de aproximadamente 

A
10,4
B
12,8
C
14,6
D
17,2
E
18,3
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PUC - RJ 2017 - Matemática - Aritmética e Problemas, Porcentagem

Abílio tem um salário de R$ 1000,00. No final do ano, ele recebeu um aumento de 10%, devido a uma promoção, seguido, em março, de um reajuste de 5%.
Qual o salário de Abílio em abril?

A
R$ 1150,00
B
R$ 1155,00
C
R$ 1105,00
D
R$ 1160,00
E
R$ 1200,00
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PUC - RJ 2017 - Matemática - Polígonos, Geometria Plana

A figura mostra um octógono regular de lado   = 18 =1. Prolongamos os lados AB, CD, EF e GH para obter o quadrado IJKL. Quanto mede o lado = 14 ?



A
2
B
1 +√2
C
1 -√2
D
12/5
E
3
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PUC - RJ 2017 - Matemática - Álgebra, Equação do 2º Grau e Problemas do 2º Grau

Considere as parábolas de equações y = -x2 e y = x2 -12x + 16. Qual é a equação da reta que passa pelos dois pontos de interseção entre as parábolas?


A
y = -6x + 8
B
y = -12x +16
C
y = 2x +4
D
y = 16
E
y = 2√5x + 16
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PUC - RJ 2017 - Matemática - Álgebra, Radiciação

Assinale a alternativa correta.

A
2 √16 = √32
B
√50 - √32 = √2
C
√2 + √3 = √5
D

√2 + √3 = 

E
5 √2 + 2√2 = 14
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PUC - RJ 2017 - Física - Estática e Hidrostática, Dinâmica, Leis de Newton, Estática - Momento da Força/Equilíbrio e Alavancas

Um bloco está sendo sustentado pelos fios 1 e 2, como mostrado na figura. Os fios fazem um ângulo reto entre si. Sendo T1 e T2 os módulos das tensões nos fios 1 e 2, respectivamente, qual é o valor da razão T1/T2 ?


A
5/12
B
5/13
C
12/13
D
12/5
E
13/5