Uvijek spremni za izazove: učenici 1c, 3c i 4c Gimnazije Metković sa profesoricama Angelom Ćelić i Anom Dragović sudjeluju u adventskoj fizici. Svaki dan od 1.12.2021. do 24.12.2012. moraju izvesti pokuse i odgovoriti na pitanje. Možda i osvojiti nagrade!
Experiment of December 1, 2021:
How do the paper and the coin fall?
A) 1: both equally fast, 2: coin faster, 3: paper faster, 4: coin faster B) 1: coin faster, 2: both equally fast, 3: coin faster, 4: paper faster C) 1: coin faster, 2: coin faster, 3: paper flies out to the side, 4: coin faster D) 1: coin faster, 2: coin faster, 3: paper flies out to the side, 4: both equally fast |
|
Experiment of December 2, 2021:
What happens, when Ms. Santa stirs 2 tablespoons of sugar into one glass and dissolves the sugar by stirring?
A) the tomato in the sugar water rises to the top. B) the tomato in the sugar water starts to float in the water. C) the tomato in the tap water rises. D) the tomato in the sugar water dissolves. |
|
Experiment of December 3, 2021:
What happens if Mr. Santa spins the glas faster?
A) the ball rises to the highest point (bottom of the glass). B) the ball rises to the largest radius of the glass. C) the ball can no longer follow the rotation and falls into the middle. D) the ball always rotates at the opening of the glass. |
|
Experiment of December 4, 2021:
Which track has completely fallen over first?
A) the row with the more densely packed stones falls over faster. B) the row with the less dense stones falls over faster. C) both rows fall over at the same rate. D) the row with the halved number of stones does not fall over completely, it remains stuck. |
|
Experiment of December 5, 2021:
Where does the yarn roll go?
A) Yarn end at the top: rolls away from the fixture, yarn end at the bottom: rolls away from the fixture. B) Yarn end top: rolls away from the fixture, yarn end bottom: rolls towards the fixture. C) Yarn end top: rolls towards the fixture, yarn end bottom: rolls away from the fixture. D) Yarn end top: rolls towards the fixture, yarn end bottom: rolls towards the fixture. |
|
Experiment of December 6, 2021:
From which position does the top spoon rotate most often?
A) from position 1 the top spoon rotates most often. B) from position 2 the top spoon rotates most often. C) from position 3 the top spoon rotates most often. D) from position 4 the top spoon rotates most often. |
|
Experiment of December 7, 2021:
What happens when Mr.Santa lifts the bottle a little and drops it?
A) water squirts out of the top of the straw. B) air bubbles appear in the bottle. No water comes out of the straw. C) nothing happens. D) water and air are sucked through the straw into the bottle. |
|
Experiment of December 8, 2021:
What can Ms. Santa read from the recording of the bouncing ball?
A) The ball height decreases, the proportional energy loss in % remains about the same. B) The ball height decreases, the proportional energy loss in % increases. C) The ball height decreases, the proportional energy loss in % decreases. D) The ball height remains the same, the proportional energy loss in % increases. |
|
Experiment of December 9, 2021:
What happens if Mr. Santa blows forcefully into the funnel against the ball from below?
A) the ball rises high out of the funnel on the air current, but does not fall down. B) the ball flies out of the funnel in a high arc. C) the ball makes a clacking sound in the funnel but does not fly out. D) the ball does not move. You cannot blow into the funnel. |
|
Experiment of December 10, 2021:
What observation does Ms. Santa make where the glue strip is?
A) the glass turns blue. B) the glass becomes even cloudier. C) the glass becomes transparent. D) the glass becomes completely opaque. |
|
Experiment of December 11, 2021:
What happens, when Mr. Santa adds a multivitamin tablet?
A) Gas bubbles rise in the water, stick to the separating layer between water and oil and form a gas layer. B) Gas bubbles pull green water drops up through the oil, the water drops then sink again. C) Gas bubbles rise up through the water and oil alone and burst at the surface of the oil. No water droplets are transported. D) Gas bubbles disperse in the water and form a uniform foam. |
|
Experiment of December 12, 2021:
What happens when Ms. Santa takes both bottles in her hands and turns them upside down?
A) little or no water leaks out of both bottles. B) little or no water runs out of the bottle without washing-up liquid, the bottle with washing-up liquid runs completely empty. C) little or no water runs out of the bottle with washing-up liquid, the bottle without washing-up liquid runs completely empty. D) both bottles run completely empty. |
|
Experiment of December 13, 2021:
How do the sounds differ?
A) blown: both the same, tapped: fizz low and rising, tap water higher. B) blown: both equal, tapped: bubbles low and rising, tap water higher and rising. C) blown: Bubbles high, tap water low, tapped: both equal and both rising. D) blown: Bubbles low, tap water high, tapped: both equal and both descending. |
|
Experiment of December 14, 2021:
What observation does Ms. Santa make?
A) the salt water boils faster. B) tap water boils faster. C) both boil at the same rate. D) the salt water does not boil at all. |
|
Experiment of December 15, 2021:
What happens if Mr. Santa puts the lid on the water so that the water jet hits the hole in the middle of the lid?
A) the metal lid turns around the hole and sinks very slowly to the ground. B) the metal lid always sinks to the ground immediately. C) the metal lid stays in place and floats on the surface of the water. D) the metal lid rolls up. |
|
Experiment of December 16, 2021:
What does Ms. Santa get after cutting the paper strips up?
A) 0 times: 2 separate rings, 1 time: Möbius strip, 2 times: rings hanging inside each other, 3 times: cloverleaf knot B) 0 times: 2 separate rings, 1 time: cloverleaf knot, 2 times: Möbius band, 3 times : interlocking rings C) 0 times: 2 separate rings, 1 time: interlocking rings, 2 times: cloverleaf knot, 3 times: Möbius band D) 0 times: Möbius strip, 1 time: 2 separate rings, 2 times interlocking rings, 3 times cloverleaf knot. |
|
Experiment of December 17, 2021:
What amazing observation does Mr. Santa make?
A) concentric rings have formed in the rice around the centre of the pot. B) radial stripes have formed in the rice starting from the centre of the pot. C) triangles have formed in the rice. D) small holes or craters have formed evenly distributed in the rice. |
|
Experiment of December 18, 2021:
What happens when Ms. Santa turns the spool of yarn around 5 more times, places it on the table with the skewer as a trailer and then lets go?
A) the spool moves away from the trailer, getting faster and faster. B) the spool moves away from the trailer, slowly, with almost constant speed. C) the spool moves towards the trailer, slowly, with almost constant speed. D) the spool moves towards the trailer, getting faster and faster. |
|
Experiment of December 19, 2021:
What happens, if Mr. Santa pours water into the right bottle again?
A) only the water level in the right bottle rises. B) only the water level in the right-hand bottle and in the middle bottle rises. C) only the water level in the middle bottle rises. D) the water level in the left bottle also rises, the water flows uphill. |
|
Experiment of December 20, 2021:
How much weight do the paper rolls bear before they are flattened?
A) up to 500 g books B) up to 1000 g books C) up to 1500 g books D) more than 2000 g books |
|
Experiment of December 21, 2021:
Which water now flows faster out of the funnel?
A) the tap water flows faster. B) the sugar water flows faster. C) the sugar water clogs the straw, it does not flow all the way through. D) both flow at the same rate. |
|
Experiment of December 22, 2021:
What does she observe?
A) the wire moves from top to bottom through the ice cube. The ice cube remains intact. B) the wire moves from top to bottom through the ice cube. The ice cube falls apart. C) the wire breaks and the two PET bottles fall down. D) nothing happens. The wire remains unchanged on the ice cube. |
|
Experiment of December 23, 2021:
What happens, if Mr. Santa holds the balloons side by side in front of him in a place protected from the wind and releases them at the same time?
A) the balloon with flour immediately falls to the ground. B) the balloon without flour flies higher. C) the balloon with flour flies higher. D) both balloons fly the same height. |
|
Experiment of December 24, 2021:
What does Ms. Santa observe about the movements of the candle flames?
A) the candles with and without spacing all always flicker independently. B) the candles with and without distance always flicker synchronously. C) the candles with spacing flicker independently, those without spacing flicker synchronously. D) the candles with spacing flicker synchronously, those without spacing flicker independently. |
|