Crossword Puzzle
P1 Revision - Triple
Across
- low frequency wave that can be detected in all parts of the Universe - energy left over from the Big Bang (cosmicmicrowavebackgroundradiation)
- A wave that can travel through solids, liquids and gases (pwave)
- A wave that can only travel through solids (swave)
- an interstellar cloud of gas and dust - the birthplace of stars (nebula)
- the stage after main sequence star where helium is fused into larger elements (up to carbon) (redgiant)
- speed x time (distance)
- a high energy electron that comes from the nucleus (beta)
- Which of Newton's laws is it? An object in motion will stay in motion unless an unbalanced force acts on it. (firstlaw)
- Which of Newton's laws is it? Every action has an equal and opposite reaction. (thirdlaw)
Down
- the change in speed and direction of a wave when it hits a change in density (refraction)
- Earth-centred model of the Universe (geocentric)
- Sun-centred model of the Universe (heliocentric)
- an image that can be projected on a screen (real)
- an image that cannot be projected on a screen (virtual)
- the change in velocity over time (acceleration)
- a quantity that has direction and magnitude (vector)
- mass in motion (momentum)
- when smaller atoms come together to make larger atoms (nuclearfusion)
- the height of a wave (amplitude)
- a wave that vibrates perpendicular to the direction of the wave (transverse)
- a wave that vibrates parallel to the direction of the wave (longitudinal)
- the number of waves passing a point per second (frequency)
- the least penetrating form of radiation (alpha)
- a sound above 20,000Hz (ultrasound)
- A wave that was (shockingly!) detected by the change in temperature in a thermometer (Herschel) (infrared)
- the amount of matter in an object; measured in Kg (mass)
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