Cause and Effect Sentences

In our class, our writing activity was to read the sentences and identify the cause, effect and signal words (sw). Here are the sentences and answers.

EXAMPLE: When water is heated, the molecules move quickly, therefore the water boils.

CAUSE: water heated, molecules move quicky

EFFECT: water boils

SW: therefore

1. A tornado blew the roof off the house, and as a result, the family had to find another place to live.

CAUSE: tornado blew off the roof of a house

EFFECT: family had to find a new house

SW: as a result

2. Because the alarm was not set, we were late for work.

CAUSE: alarm was not set

EFFECT: we were late for work

SW: because

3. The moon has gravitational pull, consequently the oceans have tides.

CAUSE: gravitational pull of the moon

EFFECT: oceans have tides

SW: consequently 

4. Since school was canceled, we went to the mall.

CAUSE: school was cancelled 

EFFECT: we went to the mall 

SW: since

5. John made a rude comment, so Elise hit him.

CAUSE: John made a rude comment

EFFECT: Elise hit John

SW: so

6. When the ocean is extremely polluted, coral reefs die.

CAUSE: extreme pollution in oceans

EFFECT: coral reefs die

SW: when

7. The meal we ordered was cheaper than expected, so we ordered dessert.

CAUSE: cheaper meal

EFFECT: ordered dessert

SW: so

8. Since helium rises, a helium balloon floats.

CAUSE: rising helium

EFFECT: floating baloon

SW: since

9. There has been an increase in greenhouse gases, therefore global warming is happening.

CAUSE: increase in greenhouse gases

EFFECT: global warming

SW: therefore

10. Betty completed each task perfectly, therefore she was promoted.

CAUSE: Betty completed her task

EFFECT: she was promoted

SW: therefore

11. Some believe dinosaurs died out because a large meteor hit the earth.

CAUSE: large meteor hitting the earth

EFFECT: death of dinosaurs

SW: because

12. I had to get the mop since I spilled my juice.

CAUSE: spilled juice

EFFECT: getting the mop

SW: since

13.  Tsunamis happen when tectonic plates shift.

CAUSE: shifting tectonic plates

EFFECT: tsunamis

SW: when

14. Fred was driving 75 in a 35 mile zone, therefore he got a speeding ticket.

CAUSE: driving 75 in a 35 mile zone

EFFECT: getting a speeding ticket

SW: therefore

15. Because of changes in classifications, Pluto is no longer a planet.

CAUSE: changes in classifications 

EFFECT: Pluto isn't a planet anymore

SW: because of

Read more at http://examples.yourdictionary.com/cause-and-effect-examples.html#yb96vrDYZOHJIupK.99