Time Flies G6

A year goes by *** microseconds faster at the top of Mount Everest than it does at sea level.

• 10

• 15

• 20

• 25

******** time is the smallest standard of the scientific measurement of time.

• Plank

• plonk

• Plink

• planck

The strontium atomic clock is the most accurate clock ever built. It’s accurate to within a second over *** billion years.

• 45

• 30

• 15

• 5

A galaxy called z8_GND_5296 is the oldest object in the known universe. It’s estimated to be **** billion years old, which is about 700 million years younger than the universe itself.

• 12.1

• 10.5

• 11.3

• 13.1

Despite what we’ve been taught, a day isn’t a full 24 hours. It actually takes 23 hours, 56 minutes, and 4.2 seconds for the earth to rotate once.

• true

• I need more time

• false

• Can I ask a friend?

Is a 4.4 billion-year-old crystal, a zircon, the oldest known object on Earth. ?

• Tr. Mark is the oldest thing on earth

• true

• false

• Mr Mckenzie is the oldest thing on Earth

On the planet Mercury, a single day is **** Earth years long.

• 2 years

• 1 year

• 6 months

• 3 months

The Earth’s rotation is slowing, making the 24-hour day slightly off. In order to compensate for the lengthening days, the International Earth Rotation Service (the body which regulates astronomical time) periodically adds a second to the clock to keep things regular. This extra second is called a leap second, and the most recent one took place on Dec. 31, 20**.

• 15

• 16

• 17

• 18

There are 31,556,926 seconds in a year.

• true

• false

• Give me a second

• Just a minute

Is the Earth older or Younger than the Sun?

• older

• same age

• a Little older

• Younger