Grade 8 · Science

Grade 8 Science — Earth systems questions and answers

Plate tectonics, weather, and the rock cycle. Written in American English for students, parents, and teachers in the United States.

Practice quiz

Question and answer list

Open a card to see the answer. These are original practice items for US elementary students — not a state test copy.

1. Plate tectonics explains

Answer: earthquakes, volcanoes, and mountain building

Earth’s crust is in moving plates.

2. The rock cycle includes

Answer: igneous, sedimentary, and metamorphic rocks

Heat, pressure, and weathering change rocks.

3. Igneous rocks form from

Answer: cooled magma or lava

Granite and basalt are igneous.

4. A fossil is most often found in

Answer: sedimentary rock

Layers can bury remains.

5. The water cycle includes

Answer: evaporation, condensation, and precipitation

The Sun drives evaporation.

6. Weather is

Answer: the short-term condition of the atmosphere

Climate is the long-term pattern.

7. The greenhouse effect

Answer: traps heat in Earth’s atmosphere

Gases like CO₂ absorb outgoing heat.

8. A transform boundary is where plates

Answer: slide past each other

The San Andreas Fault is a famous example.