The Earth is Spinning Faster

The Earth is Spinning Faster

Lesson

Paragraph 1

The earth's rotation (旋轉) sped up (加速) last year. According to scientists, the fastest 28 days on record (記載下來的) all took place in 2020.

Open Ended

When did the Earth's 28 fastest days take place?

Multiple Choice

Which other word means rotation?

• sped

• spin

• take place

• tiny

Paragraph 2

The earth is normally (正常地) a reliable (可信賴的) timekeeper (計時器), one that scientists use to maintain UTC, or Coordinated (協調) Universal Time.

Open Ended

What is the Earth normally?

Paragraph 2

The planets rotation varies slightly because of winds, ocean currents, atmospheric pressure, and movement of the core.

Multiple Choice

What do you think the word "varies" means in this sentence?

• slows down

• speeds up

• changes

• falls

Paragraph 3

its rotation has been slowing since scientists began keeping records using satellites (人造衛星) in the 1960s.

Open Ended

What do scientists use to know how fast the earth is spinning?

Paragraph 5

Previously, the fastest day recorded was in 2005. That record was broken a staggering 28 times last year.

Open Ended

Which word means surprisingly large?