1) How long does revolution of earth takes? a) 1 week b) 1 Year c) 1 Second 2) Why does a toothbbrush have energy? a) it contains light. b) it contains sound. c) it contains mechanical energy 3) Lamp contains what energy? a) light energy. b) Heat c) Sound energy d) Mechanical energy e) nothing f) battery 4) Battery contains what energy? a) Potential b) light energy c) Chemical energy d) Sound energy e) nothing

Bảng xếp hạng

Phong cách trực quan

Tùy chọn

Chuyển đổi mẫu

Bạn có muốn khôi phục tự động lưu: không?