**Basics**

Temperature is a measurement of hot or cold.

Temperature is measured in degrees, indicated by the ° sign.

There are two systems of temperature measurement:

(1) Fahrenheit, used in the USA, abbreviated as °F.

At 32 °F, water freezes.

At 212 °F, water boils.

(2) Celsius (also known as Centigrade), used in the rest of the world, abbreviated as °C.

At 0 °C, water freezes.

At 100 °C, water boils.

To convert °F to °C, the following formula is used:

°C = (°F – 32) ×

To convert °C to °F, the following formula is used:

°F = °C × + 32

When you encounter a temperature conversion question in the Science test, you will probably be given the appropriate temperature conversion formula. You should also be allowed to use the calculator for such a question.

A temperature conversion question is an algebraic plug-in, where you plug in a number for a letter.

Question

The temperature outside is 50 °F. What is the temperature in °C?

**Answer
**10 °C

**Answer Process**

See Plug-In.

°C = (°F – 32) ×

°C = (50 – 32) × = 10

Calculator Click |
What You See |
Comment |

blinker | clears screen | |

50-32 × 5 9 |
(50-32)* | °C = (°F – 32) × Plug in 50 for °F. |

10 | Answer | |

## Temperature |

Question

The temperature outside is 50 °C. What is the temperature in °F?

**Answer
**122 °F

**Answer Process**

See Plug-In.

°F = °C × + 32

°F = 50 × + 32 = 122

Calculator Click |
What You See |
Comment |

blinker | clears screen | |

50 × 9 5 + 32 | 50*+32 | °F = °C × + 32 Plug in 50 for °C. |

122 | Answer | |

## Temperature |

Practice – Questions

°C = (°F – 32) ×

1. The temperature outside is 59 °F. What is the temperature in °C?

A. 51

B.

C. 10

D. 15

°C = (°F – 32) ×

2. The temperature outside is 68 °F. What is the temperature in °C?

A. 2

B.

C. 20

D. 10

°F = °C × + 32

3. The temperature outside is 60 °C. What is the temperature in °F?

A. 41

B.

C. 10

D. 140

°F = °C × + 32

4. The temperature outside is 30 °C. What is the temperature in °F?

A. 86

B. –

C. 68

D. 10

°F = °C × + 32

5. The temperature outside is -30 °C. What is the temperature in °F?

A. 10

B. -30

C. -22

D. 22

**
Practice – Answers
**1. D. 15

2. C. 20

3. D. 140

4. A. 86

5. C. -22

** **