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subjects for school > science > Flashcards

science Flashcards

1
Q

Does pressure decrease with depth true or false ?

A

false

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2
Q

A force that is applied to a liquid is transmitted to all parts of the liquid TRUE OR FALSE??

A

True

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3
Q

When a metal reacts with water it produces a …

A

Hydroxide

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4
Q

when something reacts with oxygen it produces an
…

A

oxide

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5
Q

What has been added to car exhausts to help remove harmful gases?

A

catalyic converters

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6
Q

Which type of oxides are usually formed when metals react with oxygen?

A

“basic” or “basic oxides”

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7
Q

Magnesium oxide reacts with a particular acid to give the salt magnesium nitrate. Which acid must have been used?

A

nitric

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8
Q

Carbon is a non-metal. Non-metal oxides are

A

acidic

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9
Q

sulfur + oxygen →

A

sulfur dioxide

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10
Q

Name the organ where oestrogen is made?

A

Ovary/ovaries

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11
Q

Sperm cells are an example of _____ that pass on genes

A

Gametes

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12
Q

Aerobic excersise and anaerobic excersise has what diffrence

A

Aerobic excersise involves movement that is fueled by oxygen and Anaerobic includes movement that require short bursts of energy.

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13
Q

Hemostatis define

A

The process of replacing blood

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14
Q

What makes up most of our blood?

A

Plasma

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15
Q

What percent of our blood is plasma?

A

55%

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16
Q

Platelets help with

A

injuries and clot blood from bleeding further from a cut

17
Q

WHITE BLOOD CELLS HELP WITH

A

FIGHTING VIRUS AND ENGULFING THE PATHOGEN

18
Q

Why does removing the intial spark or flame of a reaction not stop the reaction?

A

Because heat provided by the reaction can potentially cause unburnt fuel to burn.

19
Q

Whats in the fire triangle?

A

Oxygen,Heat,fuel

20
Q

Why does water not help with burning oil ?

A

It goes through the oil turning into steam and moving the oil ou t of the way making the fire spread out.

21
Q

What helps stop electrical fire?

A

Turning the power of the mains and using carbon dioxide gas extinguisher .

22
Q

Phases of the moon

A

New Moon
Waxing Crescent
First Quarter
Waxing Gibbous
Full Moon
Waning Gibbous
Third Quarter
Waning Crescent

23
Q

what is gravitational field strength

A

Gravitational field strength refers to the force exerted on an object due to gravity at a particular location.

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