science class 8

1.    The Motion is relative because . . . .

• at any time causes changes is distance

• always refers to other objects as a reference

• earth always evolves

• not always moving object

The following events which are apparent motion are. . . .

• a car that glides on the highway

• a car that glides on the highway

• the sun rises in the east and sets in

• the rock we throw when riding a vehicle

An object is pulled by a rope. But the object remains motionless. This means . . . .

• Friction force is greater than pulled force

• Friction is smaller than the pulled force

• The Friction force  is the same as the pulled force

• The pull force id greater than the friction force

Kaisar goes north for 8 km in 1 hour, then breaks for 0.5 hours. Then continue the journey to the east for 6 km within 1 hour. The average speed of that person is . . . .

• 0 km/jam

• 4 km/jam

• 0,4 km/jam

• 5,8 km/jam

Wahyu  run straight from A to B as far as 100 m then turned around to run straight. From B to C as far as 40 m (see picture). Then the  distance and displacement of the Wahyu during it’s motion from A to C . . . .

• 140 m and 60 m

• 140 m and 140 m

• 60 m and 60 m

• 60 m and 140 m

Gerak yang terjadi akibat rangsangan yang berasal dari dalam sel atau tubuh tumbuhan disebut gerak...

• Esionom

• Higroskopis

• Endonom

• Fototaksis

Gerak tumbuhan karena pengaruh rangsang dari lingkungan disebut . . . .

• endonom

• Esionom

• fototaksis

• Higroskofis

Gerak mekarnya bunga tulip pada musim semi termasuk jenis gerak…

• Fotonasti

• Nutinasti

• Termonasti

• Seismonasti

Karena rangsang sentuhan, maka daunnya akan menutup, terjadi pada tumbuhan. . . .

• petai cina

• putri malu

• bunga pukull empat

• latulip

Perhatikan gambar berikut! Jenis gerak dari gambar disamping disebut….

• fotonasti

• fototropisme

• tigmotropisme

• ksisfotota