educake Flashcards

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1
Q

What are the units are used for F

A

newtons

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2
Q

What is the name of the thin layer of air around Earth?

A

atmosphere

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3
Q

Name the main resistive force that opposes the driving force when a vehicle is moving.

A

air resistance

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4
Q

what’s the unit for distance

A

meters

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5
Q

Which type of electromagnetic wave is used in TV remote controls?

A

infrared

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6
Q

True or false? Concave lenses always produce inverted images.

A

false

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7
Q

Sounds are made when objects __________ in air. What one word completes the sentence?

A

vibrate

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8
Q

Which of the colours in the electromagnetic spectrum has the longest wavelength?

A

red

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9
Q

What does the intensity and distribution of wavelengths of any emission depend on?

A

body temperature

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10
Q

X-rays and gamma rays are both part of the __________ spectrum. What one word completes the sentence?

A

electromagnetic

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11
Q

Two magnets are brought very close together but do not touch. Do they exert a force on each other?

A

yes

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12
Q

Which of the following everyday applications does NOT contain a motor?

A

kettle

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13
Q

True or false? A current-carrying straight wire placed in a magnetic field can move because it experiences a force.

A

True

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14
Q

Which of these is a reason electromagnets are sometimes more useful than permanent magnets?

A

electromagnets can be switched on and off

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15
Q

What units are used for current? Give the word, not the symbol.

A

amps

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16
Q

A magnet that keeps its magnetism after being moved away from a magnet is referred to as which type of magnet?

A

permanent

17
Q

An electromagnet is a __________ with an iron core. What word completes the sentence?

A

solenoid

18
Q

What type of force exists between a magnet and a magnetic material?

A

attraction

19
Q

Name planet 2 in the solar system

A

venus

20
Q

Name planet 5 in the solar system

A

jupiter

21
Q

name planet 8 in the solar system

A

neptune

22
Q

True or false? Nuclear fission is the process by which energy is released in our Sun.

A

false