Vocabulary
Tenses
Science
Irregular verbs
Numbers
100

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100

Verb to be.

Am, is and are.

100

Organisms that are capable of producing their own nutrients.

Autotrophs.
100

Eat.

Ate. 

100

21°

Twenty-first

200

Compound adjective that means attractive and noticeable.

Eye-catching.

200

What tense is it?

"Fernando and Paulina are eating burgers right now."

Present continuous.
200

The process of consuming carbon dioxide and releasing oxygen.

Photosynthesis.

200

Get.

Got.

200

2,634

Two thousand six hundred thirty-four

300

To capture and keep a person against their will.

Kidnap.

300

Name the tense.

An action in progress that hasn't begun yet. 

Future continuous.

300

These are organisms that feed on other animals.

Carnivores.

300

Bring.

Brought.

300

81,597

Eighty-one thousand five hundred ninety-seven

400

To be found responsible for a crime. 

Guilty.

400

What tense is used?

"By the time I came here, I had already gone to the movies."

Past perfect.
400

The energy associated with a body in motion. 

Kinetic energy.

400

Catch.

Caught. 

400

12,476,091

Twelve million four hundred seventy-six thousand ninety-one.

500

An open space at the top of stairs is a...

Landing.

500

What conditional is it?

"If you paid attention, you would get better grades."

Second conditional. 

500

In this state, particles are attracted to one another by great force. 

Solid state.

500

Understand.

Understood. 

500

7,450,605,013

Seven billion four hundred fifty million six hundred five thirteen.