Question of the day rules
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Question of the Day Rules. You must work alone You may use your textbook today You have 10 minutes to complete the QOD Good luck!!. Question(s) of the Day. Read p.105 of your textbook and answer the following questions.

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Question of the Day Rules

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Question of the day rules

Question of the Day Rules

  • You must work alone

  • You may use your textbook today

  • You have 10 minutes to complete the QOD

    Good luck!!


Question s of the day

Question(s) of the Day

Read p.105 of your textbook and answer the following questions.

Why is it so important to reduce energy consumption?

Give 3 examples that we can do to reduce our energy consumption in our own homes?


Answers

Answers

1) Why is it so important to reduce energy consumption?

.

Answer: By reducing our energy consumption, we also reduce our impact on the environment. If we reduce our fossil fuel consumption, we generate less greenhouse gas. If we reduce our hydroelectric demands, we help prevent further flooding of land to build new dams.


Answers1

Answers

2) Give 3 examples that we can do to reduce our energy consumption in our own homes?

Answers will vary. Examples: turning off the lights when we leave a room

– turning down the heating at night and when we are away from home

– using energy-efficient appliances

– insulating our homes better.


What are we doing today

What are we doing Today?

  • Hand in assignment (Nuclear EST)

  • Question(s) of the day

  • Practice Problem from HW

  • Ch. 3 (ST) Test Nov. 12

  • Ch. 3 – EST Notes Motion & Forces

  • Class work questions

  • Get back Chapter 2 Test (EST)


Question of the day rules

The specific heat capacity corresponds to the amount of thermal energy required to raise the temperature of one gram of a substance by one degree Celsius (p. 74).

Where: change in T = Tf - Ti


Practice question

Practice Question

  • What final temperature will be attained by a 250 ml cup of 10 oC water if it absorbs 1000 J of heat?

1ml = 1g

Note, because water's density = 1g/mL, 250 mL = 250 g

Q = m c ΔT

1000 J = 250(4.19) (x - 10)

x - 10 = 1000 /250/4.19

x - 10 = 0.95

x = 10 .95 oC


Another one for fun

Another One for Fun

  • Ravi puts a 100-g block of lead, heated to 155C, in 100 mL of water at 19C. The water temperature rises to 24C. Assuming no energy has been lost to the surroundings, calculate the specific heat capacity of lead.


Question of the day rules

The main variables in the description of motion are speed (or velocity), travel, time and acceleration (p. 79).

V = d/Δt

V = average speed (in meters/second)

D = the distance travelled (in meters)

Δt = the travelling time (seconds)


Practice

Practice

1) What is the average speed of Mr. Meades car that travels 25 km in 14 minutes?


V d t

V = d/Δt

1) What is the average speed of Mr. Meades car that travels 25 km in 14 minutes?

Answer: 25000 meters/840 seconds =

29.76 m/s

What is the answer in km/hour ?

Answer: 107.2 km/hr


Question of the day rules

A force is an action that can change the motion of an object, or deform the object, by pushing or pulling on it (p. 80).

Force is measured in Newtons


Michael jordan vs isaac newton

Michael Jordan Vs. Isaac Newton


A force is always exerted by one body on another and in one direction p 80

A force is always exerted by one body on another, and in one direction (p. 80).


Question of the day rules

There are four main types of forces: gravitational force, electromagnetic force, strong nuclear force and weak nuclear force (p. 81).


Question of the day rules

At the earth’s surface, all objects in free fall are subject to a force causing them to accelerate at a rate of 9.8 m/s2


Explained

Explained


Mass is a measure of the quantity of matter in an object p 83

Mass is a measure of the quantity of matter in an object (p. 83).

-Does not matter where the mass is measured.

Jonah has a mass of 78 Kilograms on earth and Jonah has a mass of 78 Kilograms on the moon.


Weight is a measure of the gravitational force acting on an object p 83

Weight is a measure of the gravitational force acting on an object (p. 83).


Question of the day rules

Classwork

From your textbook page 100-101

Numbers: 13, 14, 16, 17, 19

Don’t forget Ch. 3 (ST) Test on November 12

Tutorial on Monday after school


Homework check time

Homework Check Time

  • P.39-40 in your workbook.

  • P.99-100 of Textbook 8, 9, 10, 11ab, 12ab


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