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physics > Earth And Space, Electricity > Flashcards

Earth And Space, Electricity Flashcards

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1
Q

How long does it take the earth to orbit the sun

A

364 1/4

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2
Q

What causes the earth to have Seasons? Give example

A

Depends on the tilt of the earths axis (235 degrees).
Summer: northern hemisphere is towards the sun.
Winter: northern hemisphere is away from the sun.

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3
Q

What is gravity ? The bigger the mass…

A

A force that attracts all masses. The bigger the mass the stronger the gravity

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4
Q

What is mass? What is it measured in?

A

The amount of a substance.
Kg or g

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5
Q

What is weight? What is it measured in?

A

Weight is a force.
Newtons (N)

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6
Q

How many kg in 100N

A

10kg =100N

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7
Q

How do u calculate the weight?

A

Weight= mass x gravitational pull

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8
Q

What is a satellite? What are they used for?

A

A satellite is an object intentionally placed into orbit in outer space.
Used for communications,TV signals

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9
Q

What is a star?

A

A body that posses a light that causes it to reflect the light independently

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10
Q

What re the planets in order?

A

Mercury
Venus
Earth
Mars
Jupiter
Saturn
Uranus
Neptune

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11
Q

What is electricity?

A

Flow of electric charge. These charges are called electrons

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12
Q

What is the unit for charge

A

Coulumb (c)

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13
Q

What is the unit for current

A

Ampere (a)

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14
Q

What is the unit for voltage

A

Volt (v)

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15
Q

What are these symbols.
Bulb
Switch
A meter
Voltmeter
Fuse
Cell
Battery
Led
Resistor
Diode

A

In book

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16
Q

Explain what a series circuit looks like:

A

In book

17
Q

Explain what a parallel circuit looks like?

A
18
Q

Does it matter where the ammeter is in a series circuit?

A

It doesn’t matter.the current has the same value at all positions.

19
Q

Does it matter where the ammeter is in a parallel circuit?

A

It does matter. The current has different values at different places

20
Q

What does (+ to +) and (- to -)mean voltage?

A

Cancels out voltage

physics (3 decks)

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